The Protector

{T}: Prevent the next 1 damage that would be dealt to any target this turn.

The Vanquisher

Your starting hand size is increased by one.
Your maximum hand size is increased by one.

Hydra Head

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

The Explorer

You may play an additional land on each of your turns.

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.

The Avenger

{3}, {T}: Target creature you control gains deathtouch until end of turn.

The General

Exile The General: Creatures you control get +1/+1 until end of turn. Untap them.

The Provider

Exile The Provider: Put two +1/+1 counters on target creature you control. You gain life equal to that creature's toughness.

The Philosopher

Strike the Weak Spot

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

Unified Lunge

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

Lash of the Tyrant

Equipped creature gets +1/+2 and has deathtouch.
Equip {2}

The Destined

Spells you control that target a creature you control cost {2} less to cast.

The Champion

{2}, {T}, Exile The Champion: Search your library for a legendary artifact card that isn't a creature, reveal it, and put it onto the battlefield. Then shuffle your library.

The Warmonger

Exile The Warmonger: Creatures you control get +2/+0 and gain haste until end of turn.

Bow of the Hunter

Equipped creature has "{T}: This creature deals 2 damage to any target."
Equip {2}

Disorienting Glower

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

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.

Ravenous Brute Head

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

The Savant

Exile The Savant: Tap all creatures your opponents control. Those creatures don't untap during their controllers' next untap steps.

Hydra's Impenetrable Hide

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

Spear of the General

Equipped creature gets +2/+0 and has first strike.
Equip {2}

Axe of the Warmonger

Equipped creature gets +2/+1 and has haste.
Equip {2}

Noxious Hydra Breath

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

The Warrior

{T}: Target creature you control gains haste 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.

Cloak of the Philosopher

Equipped creature gets +1/+1.
{2}: Untap equipped creature.
Equip {2}

The Tyrant

Exile The Tyrant: Creatures your opponents control get -1/-1 until end of turn.

The Hunter

{T}: Target creature you control gets +1/+1 until end of turn.

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.

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.

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.

The Slayer

You start the game with an additional 7 life.

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.

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.