Return target creature to its owner's hand.
Madness

Counter target spell unless its controller pays .

Target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value until end of turn. (It retains its abilities.)

Counter up to four target spells and/or abilities.
Untap up to four target artifacts and/or creatures.

Counter target spell that targets a permanent you control.
Draw a card.

Draw a card for each attacking creature.

Counter target spell. Seek a card with the same mana value as that spell.

Strive — This spell costs more to cast for each target beyond the first.
Return any number of target enchantments to their owners' hands.

Sneak
Target opponent mills half their library, rounded up.

The owner of target attacking creature you don't control puts it on their choice of the top or bottom of their library.

Counter target spell cast from a graveyard.
Draw a card.

This spell can't be countered.
Counter target spell.

Shuffle a card from your hand into your library. If you do, draw two cards at the beginning of the next turn's upkeep.

Counter target creature or planeswalker spell. Create a 1/1 colorless Thopter artifact creature token with flying.

Counter target spell. Look at its controller's hand.

Amass Zombies 1.
You and permanents you control gain hexproof until end of turn.

Target player returns each commander they control from the battlefield to the command zone.
Draw a card.

Target creature gains flying until end of turn.
Draw a card.

Target player shuffles their graveyard into their library.
Draw a card.

Return target nonland permanent to its owner's hand.
Draw a card.

If three or more creatures are attacking, you may pay rather than pay this spell's mana cost.
Attacking creatures get -3/-0 until end of turn.

Target creature gains flying until end of turn.
Splice onto Arcane

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

Target player may stand up, sing for everyone's amusement "I'm a little teapot, short and stout," form a teapot handle with one arm, sing "here is my handle," form a spout with the other arm, and sing "here is my spout." If he or she doesn't you may do so to win the game.

Counter target spell unless its controller pays . If you control a creature with flying, counter that spell unless its controller pays instead.

Gift a card (You may promise an opponent a gift as you cast this spell. If you do, they draw a card before its other effects.)
Counter target creature spell. If the gift was promised, instead counter target spell.

Search your library for a card, then shuffle and put that card third from the top.

This spell costs less to cast if you control a Pirate.
Counter target spell unless its controller pays .

Replicate
Counter target spell unless its controller pays .

The owner of target creature or enchantment puts it into their library second from the top or on the bottom. You create a Clue token.