Sliver

Swallow the Hero Whole

Each player exiles a creature they control. Until the Hydra's next turn, when a Head leaves the battlefield, return the exiled cards to the battlefield under their owners' control.

Neck Tangle

If there are five or more Heads on the battlefield, tap two of them and they don't untap during the Hydra's next untap step. Otherwise, reveal the top card of the Hydra's library and the Hydra casts that card.

Touch of the Horned God

Whenever a Minotaur attacks this turn, it gains deathtouch until end of turn.

Shrieking Titan Head

At the beginning of the Hydra's end step, each player discards a card.
Hero's Reward — When Shrieking Titan Head leaves the battlefield, each player gains 4 life and draws a card.

Blur Sliver

Sliver creatures you control have haste. (They can attack and {T} as soon as they come under your control.)

Shivan Devastator

Flying, haste
This creature enters with X +1/+1 counters on it.

Goblin

Goblin Chieftain

Haste (This creature can attack and {T} as soon as it comes under your control.)
Other Goblin creatures you control get +1/+1 and have haste.

Ballistic Boulder

Might Sliver

Maddened Oread

As long as five or more Revelers are on the battlefield, Maddened Oread attacks each turn if able.
Hero's Reward — When Maddened Oread leaves the battlefield, each player gains 3 life.

Xenagos Ascended

Xenagos Ascended can't leave the battlefield as long as a Reveler is on the battlefield.
When Xenagos Ascended leaves the battlefield, each player wins the game.

Frontline Rush

Choose one —
• Create two 1/1 red Goblin creature tokens.
• Target creature gets +X/+X until end of turn, where X is the number of creatures you control.

Consuming Rage

Whenever a Minotaur attacks this turn, it gets +2/+0 until end of turn. Destroy that creature at end of combat.

Dance of Flame

Whenever a Reveler attacks, Dance of Flame deals 1 damage to each player.

Goblin Wizard

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Hydra's Impenetrable Hide

Each Head gains indestructible until the end of the Hydra's next turn.

Disorienting Glower

Players can't cast spells until the Hydra's next turn.

Mass Hysteria

Pheres-Band Revelers

Hero's Reward — When Pheres-Band Revelers leaves the battlefield, each player draws a card.

Rip to Pieces

At the beginning of combat this turn, each Reveler deals 1 damage to each player and each creature those players control.

Phyrexian Hydra

Sliver Army

Beetleback Chief

When this creature enters, create two 1/1 red Goblin creature tokens.

Sliver Legion

All Sliver creatures get +1/+1 for each other Sliver on the battlefield.

Winged Sliver

Wren's Run Hydra

Reach
This creature enters with X +1/+1 counters on it.
Reinforce X—{X}{G}{G} ({X}{G}{G}, Discard this card: Put X +1/+1 counters on target creature.)

Reckless Minotaur

Haste
Reckless Minotaur attacks each turn if able.
At the beginning of the end step, destroy Reckless Minotaur.

Fungus Sliver

All Sliver creatures have "Whenever this creature is dealt damage, put a +1/+1 counter on it." (It must survive the damage to get the counter.)

Primordial Hydra

This creature enters with X +1/+1 counters on it.
At the beginning of your upkeep, double the number of +1/+1 counters on this creature.
This creature has trample as long as it has ten or more +1/+1 counters on it.

Altar of Mogis

At the beginning of the Horde's first main phase, reveal an additional card from the top of the Horde's library. The Horde casts that card.
Hero's Reward — When Altar of Mogis is put into a graveyard from anywhere, the Horde sacrifices two Minotaurs.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
If damage would be dealt to this creature, prevent that damage. Put a -1/-1 counter on this creature for each 1 damage prevented this way.

Siege-Gang Commander

When this creature enters, create three 1/1 red Goblin creature tokens.
{1}{R}, Sacrifice a Goblin: This creature deals 2 damage to any target.

Intervention of Keranos

At the beginning of combat this turn, Intervention of Keranos deals 3 damage to each creature.

Distract the Hydra

Each player may sacrifice a creature. Each player who sacrificed a creature this way chooses a Head and taps it. Each player who didn't sacrifice a creature loses 3 life.

Vitality Salve

At the beginning of the Horde's first main phase, reveal an additional card from the top of the Horde's library. The Horde casts that card.
Hero's Reward — When Vitality Salve is put into a graveyard from anywhere, each player returns a creature card from their graveyard to the battlefield.

Benevolent Hydra

This creature enters with X +1/+1 counters on it.
If one or more +1/+1 counters would be put on another creature you control, that many plus one +1/+1 counters are put on it instead.
{T}, Remove a +1/+1 counter from this creature: Put a +1/+1 counter on another target creature you control.

Sliver Hivelord

Sliver creatures you control have indestructible. (Damage and effects that say "destroy" don't destroy them.)

Goblin Warrior

Hungering Hydra

This creature enters with X +1/+1 counters on it.
This creature can't be blocked by more than one creature.
Whenever this creature is dealt damage, put that many +1/+1 counters on it. (It must survive the damage to get the counters.)

Agate Instigator

Offspring {1}{R} (You may pay an additional {1}{R} as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.)
Whenever another creature you control enters, this creature deals 1 damage to each opponent.

Grakmaw, Skyclave Ravager

Grakmaw enters with three +1/+1 counters on it.
Whenever another creature you control dies, if it had a +1/+1 counter on it, put a +1/+1 counter on Grakmaw.
When Grakmaw dies, create an X/X black and green Hydra creature token, where X is the number of +1/+1 counters on Grakmaw.

When this creature dies, it deals 2 damage to each opponent.

Warden of the Grove

At the beginning of your end step, put a +1/+1 counter on this creature.
Whenever another nontoken creature you control enters, it endures X, where X is the number of counters on this creature. (Put X +1/+1 counters on the creature that entered or create an X/X white Spirit creature token.)

Lazotep Sliver

Sliver creatures you control have afflict 2. (Whenever a creature with afflict 2 becomes blocked, defending player loses 2 life.)
Whenever a nontoken Sliver you control dies, amass Slivers 2. (Put two +1/+1 counters on an Army you control. It's also a Sliver. If you don't control an Army, create a 0/0 black Sliver Army creature token first.)

Grown from the Stump

Place exactly two cards named Hydra Head onto the battlefield from the Hydra's graveyard. If you can't, reveal cards from the top of the Hydra's library until you reveal a Head card. Put that card onto the battlefield and the rest into the Hydra's graveyard.

Torn Between Heads

Tap up to two Heads. They don't untap during the Hydra's next untap step. Torn Between Heads deals 5 damage to each player.

Impact Tremors

Whenever a creature you control enters, this enchantment deals 1 damage to each opponent.

Impulsive Destruction

Each player may sacrifice an artifact or enchantment. Impulsive Destruction deals 3 damage to each player who didn't sacrifice a permanent this way.

Minotaur Younghorn

Haste
Minotaur Younghorn attacks each turn if able.

Rollicking Throng

When Rollicking Throng enters the battlefield, reveal the top card of Xenagos's library and Xenagos casts that card. (This ability doesn't trigger as the game begins.)

Noxious Hydra Breath

Choose one — Noxious Hydra Breath deals 5 damage to each player; or destroy each tapped non-Head creature.

Ravenous Brute Head

Hero's Reward — When Ravenous Brute Head leaves the battlefield, each player gains 2 life and draws a card.

Bonesplitter Sliver

Apex Devastator

Cascade, cascade, cascade, cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order. Multiple instances of cascade each trigger separately.)

Unified Lunge

Unified Lunge deals X damage to each player, where X is the number of Heads on the battlefield.

Snapping Fang Head

At the beginning of the Hydra's end step, Snapping Fang Head deals 1 damage to each player.
Hero's Reward — When Snapping Fang Head leaves the battlefield, each player gains 4 life and draws a card.

Genesis Hydra

When you cast this spell, reveal the top X cards of your library. You may put a nonland permanent card with mana value X or less from among them onto the battlefield. Then shuffle the rest into your library.
This creature enters with X +1/+1 counters on it.

Goblin Rogue

Minotaur Goreseeker

Haste
Minotaur Goreseeker attacks each turn if able.

Honored Hydra

Disrupt Decorum

Goad all creatures you don't control. (Until your next turn, those creatures attack each combat if able and attack a player other than you if able.)

Krenko, Mob Boss

{T}: Create X 1/1 red Goblin creature tokens, where X is the number of Goblins you control.

Goblin Soldier

Venom Sliver

Sliver creatures you control have deathtouch. (Any amount of damage a creature with deathtouch deals to a creature is enough to destroy it.)

Savage Vigor Head

At the beginning of the Hydra's end step, reveal the top card of the Hydra's library and the Hydra casts that card.
Hero's Reward — When Savage Vigor Head leaves the battlefield, each player gains 4 life and draws a card.

Apocalypse Hydra

This creature enters with X +1/+1 counters on it. If X is 5 or more, it enters with an additional X +1/+1 counters on it.
{1}{R}, Remove a +1/+1 counter from this creature: It deals 1 damage to any target.

Wild Maenads

First strike
Hero's Reward — When Wild Maenads leaves the battlefield, each player gains 3 life.

Unquenchable Fury

Each Minotaur can't be blocked this turn except by two or more creatures.

Metallic Sliver

Xenagos's Scorn

Xenagos Ascended gains trample until end of turn and attacks this turn if able.

Zaxara, the Exemplary

Deathtouch
{T}: Add two mana of any one color.
Whenever you cast a spell with {X} in its mana cost, create a 0/0 green Hydra creature token, then put X +1/+1 counters on it.

Phoberos Reaver

Haste
Phoberos Reaver attacks each turn if able.

Goblin Surprise

Choose one —
• Creatures you control get +2/+0 until end of turn.
• Create two 1/1 red Goblin creature tokens.

Strike the Weak Spot

Destroy target Head. If that Head was elite, the Hydra takes an extra turn after this one.

Hydra Head

Hero's Reward — When Hydra Head leaves the battlefield, each player gains 2 life.

Xenagos's Strike

Xenagos's Strike deals 4 damage to each player.

Watcher Sliver

Serpent Dancers

Deathtouch
Hero's Reward — When Serpent Dancers leaves the battlefield, each player draws a card.

Managorger Hydra

Trample
Whenever a player casts a spell, put a +1/+1 counter on this creature.

Cloudshredder Sliver

Sliver creatures you control have flying and haste.

Kalonian Hydra

Trample
This creature enters with four +1/+1 counters on it.
Whenever this creature attacks, double the number of +1/+1 counters on each creature you control.

Creatures you control attack each combat if able.

Battering Sliver

Voracious Hydra

Trample
This creature enters with X +1/+1 counters on it.
When this creature enters, choose one —
• Double the number of +1/+1 counters on this creature.
• This creature fights target creature you don't control.

Ironscale Hydra

If a creature would deal combat damage to this creature, prevent that damage and put a +1/+1 counter on this creature.

Gargos, Vicious Watcher

Vigilance
Hydra spells you cast cost {4} less to cast.
Whenever a creature you control becomes the target of a spell, Gargos fights up to one target creature you don't control.

Mogis's Chosen

Mogis's Chosen enters the battlefield tapped.
Mogis's Chosen attacks each turn if able.

Goblin Gang Leader

Refreshing Elixir

At the beginning of the Horde's first main phase, reveal an additional card from the top of the Horde's library. The Horde casts that card.
Hero's Reward — When Refreshing Elixir is put into a graveyard from anywhere, each player gains 5 life.

Plundered Statue

At the beginning of the Horde's first main phase, reveal an additional card from the top of the Horde's library. The Horde casts that card.
Hero's Reward — When Plundered Statue is put into a graveyard from anywhere, each player draws a card.

Descend on the Prey

Whenever a Minotaur attacks this turn, it gains first strike until end of turn and must be blocked this turn if able.

Savageborn Hydra

Double strike
This creature enters with X +1/+1 counters on it.
{1}{R/G}: Put a +1/+1 counter on this creature. Activate only as a sorcery.

Massacre Totem

At the beginning of the Horde's first main phase, reveal an additional card from the top of the Horde's library. The Horde casts that card.
Hero's Reward — When Massacre Totem is put into a graveyard from anywhere, put the top seven cards of the Horde's library into its graveyard.

Goblin Construct

This creature can't block.
At the beginning of your upkeep, this creature deals 1 damage to you.

Ecstatic Piper

When Ecstatic Piper enters the battlefield, Xenagos Ascended attacks this turn if able.
Hero's Reward — When Ecstatic Piper leaves the battlefield, each player gains 2 life.

Tuktuk the Returned

Impulsive Return

Return two cards named Ecstatic Piper from Xenagos's graveyard to the battlefield. At the beginning of combat this turn, Impulsive Return deals damage to each player equal to the number of Revelers on the battlefield.

Dance of Panic

As long as five or more Revelers are on the battlefield, all Revelers have haste and attack each turn if able.

Progenitus

Protection from everything
If Progenitus would be put into a graveyard from anywhere, reveal Progenitus and shuffle it into its owner's library instead.

Impulsive Charge

At the beginning of combat this turn, all Revelers gain haste until end of turn and attack this combat if able.