Choose target player and another target player. The first player controls the second player during the second player's next turn, and the second player controls the first player during the first player's next turn.

Flash
This spell costs less to cast for each creature that died this turn.
When this creature enters, destroy all other creatures that were dealt damage this turn.

You may sacrifice three black creatures rather than pay this spell's mana cost.
Trample

Affinity for artifacts
When this Vehicle enters, for each player, destroy up to one target creature that player controls. If a creature you controlled was destroyed this way, put two +1/+1 counters on this Vehicle.
Crew 2

Devoid
, Exile a creature card from your graveyard: Target opponent loses life equal to the exiled card's power.

Target player draws X cards and loses X life, where X is the number of cards in their graveyard.

Improvise
This creature can't be blocked by artifact creatures.

Flying
Cumulative upkeep — Gain control of a land you don't control.
This creature gets +1/+1 for each land you control but don't own.
When this creature leaves the battlefield, each player gains control of each land they own that you control.

This spell costs less to cast for each creature card in your graveyard.
Flying
When this creature enters, any number of target opponents each discard a card. For each of those opponents who didn't discard a card with mana value 4 or greater, draw a card.

Undergrowth — When this creature enters, it deals 1 damage to target opponent for each creature card in your graveyard.

This spell costs less to cast, where X is your devotion to black.

When this creature enters, target player discards two cards.
Evoke

Each player sacrifices six creatures of their choice. You create six tapped 2/2 black Zombie creature tokens.

This creature gets +1/+0 for each artifact you control.

Starting with you, each player may pay any amount of life. Repeat this process until no one pays life. Each player creates a 1/1 black Rat creature token for each 1 life they paid this way.

Players have no maximum hand size.
At the beginning of each opponent's upkeep, this enchantment deals damage to that player equal to the number of cards in that player's hand.

When this creature enters, each opponent sacrifices a creature with the greatest power among creatures they control. You gain life equal to the greatest power among creatures sacrificed this way.
Madness — , Pay 8 life.

This spell costs less to cast for each creature card in your graveyard.
Deathtouch

Amplify 1
Trample

For each land you control, create a Treasure token.

Cinder Storm deals 7 damage to any target.

Each player shuffles all creatures they own into their library. Each player who shuffled a nontoken creature into their library this way reveals cards from the top of their library until they reveal a creature card, then puts that card onto the battlefield and the rest on the bottom of their library in a random order.

As an additional cost to cast this spell, you may sacrifice any number of artifacts and/or creatures. This spell costs less to cast for each permanent sacrificed this way and less to cast for each other artifact or creature you've sacrificed this turn.
Trample
Partner

Undaunted
Exile two target creatures. For each of those creatures, its controller reveals cards from the top of their library until they reveal a creature card, puts that card onto the battlefield, then shuffles the rest into their library.

Ember Shot deals 3 damage to any target.
Draw a card.

Trample
When this creature enters, destroy target land.
Evoke

Whenever another creature enters, you may put X +1/+1 counters on this creature, where X is that creature's power.

Devoid
When you cast this spell, for each opponent, gain control of up to one target creature that player controls until end of turn. Untap those creatures. They gain trample, haste, and annihilator 1 until end of turn.
Trample, haste, annihilator 1