Pioneer

Sacrifice another creature: Blood Bairn gets +2/+2 until end of turn.

Target creature gets -X/-X until end of turn, where X is the number of cards in your graveyard.

Menace (This creature can't be blocked except by two or more creatures.) {2}{B}, Sacrifice another creature or planeswalker: Put two +1/+1 counter...

Cohort — {T}, Tap an untapped Ally you control: You draw a card and you lose 1 life.

First strike, menace Whenever Kari Zev, Skyship Raider attacks, create Ragavan, a legendary 2/1 red Monkey creature token. Ragavan enters the battl...

When Watertrap Weaver enters the battlefield, tap target creature an opponent controls. That creature doesn't untap during its controller's next un...

Enchant creature Enchanted creature gets -3/-2.

Flash Flying When Spire Mangler enters the battlefield, target creature with flying you control gets +2/+0 until end of turn.

Enchant creature Enchanted creature gets -6/-0 and loses flying.

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

When Spinal Centipede dies, put a +1/+1 counter on target creature you control.

Bestow {5}{B} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attache...

Flying

Flying Whenever Eye Collector deals combat damage to a player, each player mills a card.

When Lawless Broker dies, put a +1/+1 counter on target creature you control.

As an additional cost to cast this spell, sacrifice a creature. Target player discards a number of cards equal to the sacrificed creature's power.

Destroy target creature. If that creature had a +1/+1 counter on it, create a 1/1 green Snake creature token.

Until end of turn, target creature gets +2/+0 and gains "When this creature dies, return it to the battlefield tapped under its owner's control."

Annihilating Fire deals 3 damage to any target. If a creature dealt damage this way would die this turn, exile it instead.

Menace (This creature can't be blocked except by two or more creatures.)

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

Choose up to four target cards in your graveyard. If you control a Bolas planeswalker, return those cards to your hand. Otherwise, an opponent choo...