Act of Treason

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and this turn.)

Rampaging Baloths

Trample
Landfall — Whenever a land enters the battlefield under your control, you may create a 4/4 green Beast creature token.

Embersmith

Whenever you cast an artifact spell, you may pay . If you do, Embersmith deals 1 damage to any target.

Ichorclaw Myr

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
Whenever Ichorclaw Myr becomes blocked, it gets +2/+2 until end of turn.

Lifesmith

Whenever you cast an artifact spell, you may pay . If you do, you gain 3 life.

Venser, the Sojourner

+2: Exile target permanent you own. Return it to the battlefield under your control at the beginning of the next end step.
−1: Creatures can’t be blocked this turn.
−8: You get an emblem with “Whenever you cast a spell, exile target permanent.”

Painsmith

Whenever you cast an artifact spell, you may have target creature get +2/+0 and gain deathtouch until end of turn.

Myrsmith

Whenever you cast an artifact spell, you may pay . If you do, create a 1/1 colorless Myr artifact creature token.

Hoard-Smelter Dragon

Flying
: Destroy target artifact. Hoard-Smelter Dragon gets +X/+0 until end of turn, where X is that artifact’s converted mana cost.

Riddlesmith

Whenever you cast an artifact spell, you may draw a card. If you do, discard a card.

Aether Adept

When Aether Adept enters the battlefield, return target creature to its owner’s hand.

Diminish

Target creature has base power and toughness 1/1 until end of turn.

Captivating Vampire

Other Vampire creatures you control get +1/+1.
Tap five untapped Vampires you control: Gain control of target creature. It becomes a Vampire in addition to its other types.

Act of Treason

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and this turn.)

Act of Treason

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and this turn.)

Lightmine Field

Whenever one or more creatures attack, Lightmine Field deals damage to each of those creatures equal to the number of attacking creatures.

Leaf Arrow

Leaf Arrow deals 3 damage to target creature with flying.

Skittering Invasion

Create five 0/1 colorless Eldrazi Spawn creature tokens. They have “Sacrifice this creature: Add .”

Celestial Colonnade

Celestial Colonnade enters the battlefield tapped.
: Add or .
: Until end of turn, Celestial Colonnade becomes a 4/4 white and blue Elemental creature with flying and vigilance. It’s still a land.

Stirring Wildwood

Stirring Wildwood enters the battlefield tapped.
: Add or .
: Until end of turn, Stirring Wildwood becomes a 3/4 green and white Elemental creature with reach. It’s still a land.

Wrexial, the Risen Deep

Islandwalk, swampwalk (This creature can’t be blocked as long as defending player controls an Island or a Swamp.)
Whenever Wrexial, the Risen Deep deals combat damage to a player, you may cast target instant or sorcery card from that player’s graveyard without paying its mana cost. If that spell would be put into a graveyard this turn, exile it instead.