Gatecrash

Whenever another white creature enters the battlefield under your control, tap target creature an opponent controls.

Flying Creatures with flying your opponents control get -1/-1.

Whenever another black creature enters the battlefield under your control, target creature gains intimidate until end of turn. (It can't be blocked...

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.) When Sepulchral Primordial e...

Whenever another nontoken creature dies, you may create a 1/1 black Rat creature token. Rats you control have deathtouch.

Flying Whenever Lord of the Void deals combat damage to a player, exile the top seven cards of that player's library, then put a creature card fro...

Battalion — Whenever Boros Elite and at least two other creatures attack, Boros Elite gets +2/+2 until end of turn.

{U}: Horror of the Dim gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)

{B}: Gateway Shade gets +1/+1 until end of turn. Tap an untapped Gate you control: Gateway Shade gets +2/+2 until end of turn.

Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.) Whenever you tap a Swamp ...

Flying Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)

Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1...

Defender Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)

Flying Each creature you control with a +1/+1 counter on it has flying.

As Realmwright enters the battlefield, choose a basic land type. Lands you control are the chosen type in addition to their other types.

Flying When Mindeye Drake dies, target player mills five cards.

Flying {U}: Metropolis Sprite gets +1/-1 until end of turn.

When Leyline Phantom deals combat damage, return it to its owner's hand. (Return it only if it survived combat.)

Keymaster Rogue can't be blocked. When Keymaster Rogue enters the battlefield, return a creature you control to its owner's hand.

Whenever you cast your second spell each turn, Incursion Specialist gets +2/+0 until end of turn and can't be blocked this turn.

{1}{G}: Frilled Oculus gets +2/+2 until end of turn. Activate only once each turn.

Flying When Diluvian Primordial enters the battlefield, for each opponent, you may cast up to one target instant or sorcery card from that player'...

Flying Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, p...

Defender Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature,...