Standard MTG sets

When Assimilation Aegis enters the battlefield, exile up to one target creature until Assimilation Aegis leaves the battlefield. Whenever Assimilat...

Put a +1/+1 counter on target creature. It gains lifelink and indestructible until end of turn. (Damage and effects that say "destroy" don't destro...

Flying When Sterling Supplier enters the battlefield, put a +1/+1 counter on another target creature you control.

{2}, {T}: Tap target non-Mount creature.

{2}, {T}: Tap target non-Mount creature.

Spree (Choose one or more additional costs.) + {2} — Return target creature card from your graveyard to the battlefield. + {1} — Return target Moun...

When Fortune, Loyal Steed enters the battlefield, scry 2. Whenever Fortune attacks while saddled, at end of combat, exile it and up to one creature...

Vigilance When Claim Jumper enters the battlefield, if an opponent controls more lands than you, you may search your library for a Plains card and ...

Steer Clear deals 2 damage to target attacking or blocking creature. Steer Clear deals 4 damage to that creature instead if you controlled a Mount ...

When Stagecoach Security enters the battlefield, creatures you control get +1/+1 and gain vigilance until end of turn. Plot {3}{W} (You may pay {3}...

Ward {1} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {1}.) {3}{W}: Ar...

Flying When Pileated Provisioner enters, put a +1/+1 counter on target creature you control without flying.

Gift a tapped Fish (You may promise an opponent a gift as you cast this spell. If you do, they create a tapped 1/1 blue Fish creature token before ...

Valiant — Whenever Veteran Guardmouse becomes the target of a spell or ability you control for the first time each turn, it gets +1/+0 and gains fi...

Flying, vigilance At the beginning of your end step, if you gained or lost life this turn, target opponent loses 3 life unless they sacrifice a non...

Flying Whenever Seedpod Squire attacks, target creature you control without flying gets +1/+1 until end of turn.

Valiant — Whenever Nettle Guard becomes the target of a spell or ability you control for the first time each turn, it gets +0/+2 until end of turn....

Flying Whenever Moonrise Cleric attacks, you gain 1 life.

Flying Whenever Moonrise Cleric attacks, you gain 1 life.

Other Mice you control get +1/+1. When Mabel, Heir to Cragflame enters, create Cragflame, a legendary colorless Equipment artifact token with "Equi...

Other Mice you control get +1/+1. When Mabel, Heir to Cragflame enters, create Cragflame, a legendary colorless Equipment artifact token with "Equi...

Flash Valiant — Whenever Mouse Trapper becomes the target of a spell or ability you control for the first time each turn, tap target creature an op...

Flash Valiant — Whenever Mouse Trapper becomes the target of a spell or ability you control for the first time each turn, tap target creature an op...

When Head of the Homestead enters, create two 1/1 white Rabbit creature tokens.