Champion's Helm

Equipped creature gets +2/+2.
As long as equipped creature is legendary, it has hexproof. (It can't be the target of spells or abilities your opponents control.)
Equip {1}

Gideon, Martial Paragon

+2: Untap all creatures you control. Those creatures get +1/+1 until end of turn.
0: Until end of turn, Gideon becomes a 5/5 Human Soldier creature with indestructible that's still a planeswalker. Prevent all damage that would be dealt to him this turn.
−10: Creatures you control get +2/+2 until end of turn. Tap all creatures your opponents control.

Armillary Sphere

{2}, {T}, Sacrifice this artifact: Search your library for up to two basic land cards, reveal them, put them into your hand, then shuffle.

Whispersilk Cloak

Equipped creature can't be blocked and has shroud. (It can't be the target of spells or abilities.)
Equip {2}

Firewing Phoenix

Flying
{1}{R}{R}{R}: Return this card from your graveyard to your hand.

War Priest of Thune

When this creature enters, you may destroy target enchantment.

Captain's Call

Create three 1/1 white Soldier creature tokens.

Evolving Wilds

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Irontread Crusher

Crew 3 (Tap any number of creatures you control with total power 3 or more: This Vehicle becomes an artifact creature until end of turn.)

Austere Command

Choose two —
• Destroy all artifacts.
• Destroy all enchantments.
• Destroy all creatures with mana value 3 or less.
• Destroy all creatures with mana value 4 or greater.

Darksteel Ingot

Indestructible (Effects that say "destroy" don't destroy this artifact.)
{T}: Add one mana of any color.

Firemane Avenger

Flying
Battalion — Whenever this creature and at least two other creatures attack, this creature deals 3 damage to any target and you gain 3 life.

Inspired Charge

Creatures you control get +2/+1 until end of turn.

Battle Hymn

Countless Gears Renegade

Revolt — When this creature enters, if a permanent left the battlefield under your control this turn, create a 1/1 colorless Servo artifact creature token.

Cloudshift

Exile target creature you control, then return that card to the battlefield under your control.

Injury

Aftermath (Cast this spell only from your graveyard. Then exile it.)
Injury deals 2 damage to target creature and 2 damage to target player or planeswalker.

Insult

Damage can't be prevented this turn. If a source you control would deal damage this turn, it deals double that damage instead.

Insult // Injury

Righteous Charge

Creatures you control get +2/+2 until end of turn.

Harsh Mentor

Whenever an opponent activates an ability of an artifact, creature, or land on the battlefield, if it isn't a mana ability, this creature deals 2 damage to that player.

Traveler's Amulet

{1}, Sacrifice this artifact: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Tah-Crop Elite

Flying
You may exert this creature as it attacks. When you do, creatures you control get +1/+1 until end of turn. (An exerted creature won't untap during your next untap step.)

Fleetfeather Sandals

Equipped creature has flying and haste.
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

Dreamstone Hedron

{T}: Add {C}{C}{C}.
{3}, {T}, Sacrifice this artifact: Draw three cards.

Bomber Corps

Battalion — Whenever this creature and at least two other creatures attack, this creature deals 1 damage to any target.

Ajani's Pridemate

Whenever you gain life, put a +1/+1 counter on this creature.

Aurelia, the Warleader

Flying, vigilance, haste
Whenever Aurelia attacks for the first time each turn, untap all creatures you control. After this phase, there is an additional combat phase.

Gleam of Battle

Whenever a creature you control attacks, put a +1/+1 counter on it.

Crescendo of War

At the beginning of each upkeep, put a strife counter on this enchantment.
Attacking creatures get +1/+0 for each strife counter on this enchantment.
Blocking creatures you control get +1/+0 for each strife counter on this enchantment.

Rapacious One

Trample
Whenever this creature deals combat damage to a player, create that many 0/1 colorless Eldrazi Spawn creature tokens. They have "Sacrifice this token: Add {C}."

Boros Guildgate

This land enters tapped.
{T}: Add {R} or {W}.

Warleader's Helix

Warleader's Helix deals 4 damage to any target and you gain 4 life.

Banishing Stroke

Put target artifact, creature, or enchantment on the bottom of its owner's library.
Miracle {W} (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)

Fairgrounds Warden

When this creature enters, exile target creature an opponent controls until this creature leaves the battlefield.

Fellwar Stone

{T}: Add one mana of any color that a land an opponent controls could produce.

Commander's Authority

Enchant creature
Enchanted creature has "At the beginning of your upkeep, create a 1/1 white Human creature token."

Inferno Titan

{R}: This creature gets +1/+0 until end of turn.
Whenever this creature enters or attacks, it deals 3 damage divided as you choose among one, two, or three targets.

Windborn Muse

Flying
Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

Command Tower

{T}: Add one mana of any color in your commander's color identity.

Doomed Traveler

When this creature dies, create a 1/1 white Spirit creature token with flying.

Falkenrath Marauders

Flying
Haste (This creature can attack and {T} as soon as it comes under your control.)
Whenever this creature deals combat damage to a player, put two +1/+1 counters on it.

Untethered Express

Trample
Whenever this Vehicle attacks, put a +1/+1 counter on it.
Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)

Prowler's Helm

Equipped creature can't be blocked except by Walls.
Equip {2}

Honored Crop-Captain

Whenever this creature attacks, other attacking creatures get +1/+0 until end of turn.

Mountain

Glorybringer

Flying, haste
You may exert this creature as it attacks. When you do, it deals 4 damage to target non-Dragon creature an opponent controls. (An exerted creature won't untap during your next untap step.)

Terramorphic Expanse

Dawnfeather Eagle

Flying
When this creature enters, creatures you control get +1/+1 and gain vigilance until end of turn.

Stone Quarry

Howling Mine

At the beginning of each player's draw step, if this artifact is untapped, that player draws an additional card.

Pursue Glory

Attacking creatures get +2/+0 until end of turn.
Cycling {2} ({2}, Discard this card: Draw a card.)

Faithless Looting

Draw two cards, then discard two cards.
Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Crusader of Odric

Crusader of Odric's power and toughness are each equal to the number of creatures you control.

Legion Loyalist

Haste
Battalion — Whenever this creature and at least two other creatures attack, creatures you control gain first strike and trample until end of turn and can't be blocked by creature tokens this turn.

Shattering Blow

Felidar Sovereign

Vigilance (Attacking doesn't cause this creature to tap.)
Lifelink (Damage dealt by this creature also causes you to gain that much life.)
At the beginning of your upkeep, if you have 40 or more life, you win the game.

Mausoleum Guard

When this creature dies, create two 1/1 white Spirit creature tokens with flying.

Curse of Stalked Prey

Enchant player
Whenever a creature deals combat damage to enchanted player, put a +1/+1 counter on that creature.

Pyrewild Shaman

Bloodrush — {1}{R}, Discard this card: Target attacking creature gets +3/+1 until end of turn.
Whenever one or more creatures you control deal combat damage to a player, if this card is in your graveyard, you may pay {3}. If you do, return this card to your hand.

Renegade Map

This artifact enters tapped.
{T}, Sacrifice this artifact: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Boros Cluestone

{T}: Add {R} or {W}.
{R}{W}, {T}, Sacrifice this artifact: Draw a card.

Vandalblast

Destroy target artifact you don't control.
Overload {4}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Geist-Honored Monk

Vigilance
Geist-Honored Monk's power and toughness are each equal to the number of creatures you control.
When this creature enters, create two 1/1 white Spirit creature tokens with flying.

Moltensteel Dragon

({R/P} can be paid with either {R} or 2 life.)
Flying
{R/P}: This creature gets +1/+0 until end of turn.

Anger

Haste
As long as this card is in your graveyard and you control a Mountain, creatures you control have haste.

Plains

Attended Knight

First strike
When this creature enters, create a 1/1 white Soldier creature token.

Scion of Vitu-Ghazi

When this creature enters, if you cast it from your hand, create a 1/1 white Bird creature token with flying, then populate. (Create a token that's a copy of a creature token you control.)

Boros Garrison

This land enters tapped.
When this land enters, return a land you control to its owner's hand.
{T}: Add {R}{W}.

Sunfall

Exile all creatures. Incubate X, where X is the number of creatures exiled this way. (Create an Incubator token with X +1/+1 counters on it and "{2}: Transform this token." It transforms into a 0/0 Phyrexian artifact creature.)

Glorious End

End the turn. (Exile all spells and abilities from the stack, including this card. The player whose turn it is discards down to their maximum hand size. Damage wears off, and "this turn" and "until end of turn" effects end.)
At the beginning of your next end step, you lose the game.

Victory's Herald

Flying
Whenever this creature attacks, attacking creatures gain flying and lifelink until end of turn.

Path to Exile

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Thopter Arrest

When this enchantment enters, exile target artifact or creature an opponent controls until this enchantment leaves the battlefield.

Assemble the Legion

At the beginning of your upkeep, put a muster counter on this enchantment. Then create a 1/1 red and white Soldier creature token with haste for each muster counter on this enchantment.

Chaos Warp

The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.

Filigree Familiar

When this creature enters, you gain 2 life.
When this creature dies, draw a card.