Whipcorder

, : Tap target creature.
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Ascending Aven

Flying
Ascending Aven can block only creatures with flying.
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Chain of Acid

Destroy target noncreature permanent. Then that permanent’s controller may copy this spell and may choose a new target for that copy.

Blatant Thievery

For each opponent, gain control of target permanent that player controls.

Commando Raid

Until end of turn, target creature you control gains “When this creature deals combat damage to a player, you may have it deal damage equal to its power to target creature that player controls.”

Cabal Therapy

Choose a nonland card name. Target player reveals their hand and discards all cards with that name.
Flashback—Sacrifice a creature. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Planar Chaos

At the beginning of your upkeep, flip a coin. If you lose the flip, sacrifice Planar Chaos.
Whenever a player casts a spell, that player flips a coin. If they lose the flip, counter that spell.

Boneshard Slasher

Flying
Threshold — As long as seven or more cards are in your graveyard, Boneshard Slasher gets +2/+2 and has “When Boneshard Slasher becomes the target of a spell or ability, sacrifice it.”

Liquify

Counter target spell with converted mana cost 3 or less. If that spell is countered this way, exile it instead of putting it into its owner’s graveyard.

False Memories

Mill seven cards. At the beginning of the next end step, exile seven cards from your graveyard.

Hammer of Bogardan

Hammer of Bogardan deals 3 damage to any target.
: Return Hammer of Bogardan from your graveyard to your hand. Activate this ability only during your upkeep.

Flame Burst

Flame Burst deals X damage to any target, where X is 2 plus the number of cards named Flame Burst in all graveyards.

Mad Dog

At the beginning of your end step, if Mad Dog didn’t attack or come under your control this turn, sacrifice it.

Whipkeeper

: Whipkeeper deals damage to target creature equal to the damage already dealt to it this turn.

Soulcatcher

Flying
Whenever a creature with flying dies, put a +1/+1 counter on Soulcatcher.

New Frontiers

Each player may search their library for up to X basic land cards and put them onto the battlefield tapped. Then each player who searched their library this way shuffles it.

Burning Sands

Whenever a creature dies, that creature’s controller sacrifices a land.

Firebolt

Firebolt deals 2 damage to any target.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Ivy Elemental

Ivy Elemental enters the battlefield with X +1/+1 counters on it.

Skizzik

Kicker (You may pay an additional as you cast this spell.)
Trample, haste
At the beginning of the end step, if Skizzik wasn’t kicked, sacrifice it.