Howl of the Horde

When you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy.
Raid — If you attacked this turn, when you next cast an instant or sorcery spell this turn, copy that spell an additional time. You may choose new targets for the copy.

Jeering Instigator

Morph

Morph {2}{R} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
When this creature is turned face up, if it's your turn, gain control of another target creature until end of turn. Untap that creature. It gains haste until end of turn.

Leaping Master

{2}{W}: This creature gains flying until end of turn.

Mardu Blazebringer

When this creature attacks or blocks, sacrifice it at end of combat.

Mardu Heart-Piercer

Raid — When this creature enters, if you attacked this turn, this creature deals 2 damage to any target.

Mardu Warshrieker

Raid — When this creature enters, if you attacked this turn, add {R}{W}{B}.

Monastery Swiftspear

Haste
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Sarkhan, the Dragonspeaker

Sarkhan, the Dragonspeaker Emblem

+1: Until end of turn, Sarkhan becomes a legendary 4/4 red Dragon creature with flying, indestructible, and haste. (He doesn't lose loyalty while he's not a planeswalker.)
−3: Sarkhan deals 4 damage to target creature.
−6: You get an emblem with "At the beginning of your draw step, draw two additional cards" and "At the beginning of your end step, discard your hand."

Warrior

Herald of Anafenza

Outlast {2}{W} ({2}{W}, {T}: Put a +1/+1 counter on this creature. Outlast only as a sorcery.)
Whenever you activate this creature's outlast ability, create a 1/1 white Warrior creature token.

Shatter

Summit Prowler

Swift Kick

Target creature you control gets +1/+0 until end of turn. It fights target creature you don't control.

Tormenting Voice

As an additional cost to cast this spell, discard a card.
Draw two cards.

Trumpet Blast

Attacking creatures get +2/+0 until end of turn.

Valley Dasher

Haste
This creature attacks each combat if able.

Khans of Tarkir