When Slum Reaper enters, each player sacrifices a creature of their choice.

Destroy target artifact or enchantment. You gain 4 life.

Partner with Soulblade Corrupter (When this creature enters, target player may put Soulblade Corrupter into their hand from their library, then shuffle.)

When Soulblade Renewer enters, support 2. (Put a +1/+1 counter on each of up to two other target creatures.)

When Sparring Mummy enters, untap target creature.

Counter target spell with mana value 2.

Assist (Another player can pay up to of this spell's cost.)

When Spellweaver Duo enters, you may return target tapped creature to its owner's hand.

When Stadium Vendors enters, choose a player. That player adds two mana of any one color they choose.

At the beginning of your upkeep, exile the top card of each opponent's library. Until end of turn, you may cast spells from among those exiled cards, and you may spend mana as though it were mana of any color to cast those spells.

The next time you would lose the game this turn, instead draw seven cards and your life total becomes 1.

Exile Stunning Reversal.

Flying

Swarm of Bloodflies enters with two +1/+1 counters on it.

Whenever another creature dies, put a +1/+1 counter on Swarm of Bloodflies.

Exile target creature. Its controller gains life equal to its power.

Create three 1/1 white Warrior creature tokens.

, Pay 3 life: Flip a coin. If you win the flip, you gain 6 life.

Assist (Another player can pay up to of this spell's cost. You choose the value of X.)

Support X. (Put a +1/+1 counter on each of up to X target creatures.)

Each creature with a +1/+1 counter on it gains trample until end of turn.

Put onto the battlefield under your control all creature cards in all graveyards that were put there from the battlefield this turn.

Flying

Whenever you cast a spell, return target permanent to its owner's hand.

Partner with Pir, Imaginative Rascal (When this creature enters, target player may put Pir into their hand from their library, then shuffle.)

Whenever you draw a card, put a +1/+1 counter on Toothy, Imaginary Friend.

When Toothy leaves the battlefield, draw a card for each +1/+1 counter on it.

As True-Name Nemesis enters, choose a player.

True-Name Nemesis has protection from the chosen player.

, : Tap target creature.

Flying

Urborg Drake attacks each combat if able.

When Veteran Explorer dies, each player may search their library for up to two basic land cards, put them onto the battlefield, then shuffle.

Trample

If damage would be dealt to another creature you control, prevent that damage. Put a +1/+1 counter on that creature for each 1 damage prevented this way.

When Vigor is put into a graveyard from anywhere, shuffle it into its owner's library.

For each player, choose friend or foe. Each friend returns a creature card from their graveyard to their hand. Each foe sacrifices a creature of their choice.

Whenever an opponent taps a land for mana, tap all lands that player controls.

If a creature an opponent controls attacks, all creatures that opponent controls attack if able.

+2: Until your next turn, up to two target creatures each have base power and toughness 0/3 and lose all abilities.

−2: Target player draws two cards. Until your next turn, instant, sorcery, and planeswalker spells that player casts cost less to cast.

−8: Target player gets an emblem with "Whenever you cast an instant or sorcery spell, copy it. You may choose new targets for the copy."

Partner with Rowan Kenrith

Will Kenrith can be your commander.

Vigilance

For each player, choose friend or foe. Each friend creates a token that's a copy of a creature they control. Each foe returns a creature they control to its owner's hand.