msem-instigator

Put target nonland permanent on top of its owner's library. If you control a Wizard, you may put that permanent on the bottom of its owner's library instead.

Distorted (This creature can be blocked by tapped creatures but not untapped creatures.)

Investigate, then counter target spell unless its controller pays {1} for each Clue you control. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

Flash
Whenever you draw a card during an opponent's turn, you get a glory counter. (You lose glory counters before life. A player with ten or more glory counters wins the game.)

Counter target spell. Return up to one target permanent you control to its owner's hand.

Concord — When Coral Bruiser enters, if there are four or more card types among permanents you control, put target creature you don't control into its owner's library third from the top.

Enchant creature
Concord — When Coral Guidance enters, if there are four or more card types among permanents you control, draw a card.
Enchanted creature doesn't untap during its controller's untap step.

Whenever Coral Hunter attacks, another target creature can't be blocked this turn.

Slipstream (This creature can't be blocked as long as only creatures with slipstream are attacking.)
Cycling {U} ({U}, Discard this card: Draw a card.)

Whenever an opponent casts a spell, that player gets a poison counter unless they pay {1}.
As long as an opponent has five or more poison counters, Corrupted Soothsayer gets +2/+1 and has flying.

Align X (Choose modes with total ★ less than or equal to X. You may choose modes multiple times.)
• ★ — Draw two cards, then discard two cards.
• ★★ — Draw three cards, then discard a card.
• ★★★★★ — You may cast a spell from your hand and from your graveyard without paying their mana costs.

When Cosmic Expansion enters, draw a card, then choose a card name.
Whenever one or more creatures you control with the chosen name deal combat damage to a player, you may create a token that's a copy of another target artifact or enchantment you control.

Converge — Counter target spell unless its controller pays {1} for each color of mana spent to cast Cosmic Sinkhole.

For any number of target spells or abilities your opponents control, counter it unless its controller pays {4}.

Counter target spell.
Surveil 1.

Choose two —
• Create a 6/6 blue Kraken creature token.
• Take an extra turn after this one.
• End the turn.
Exile Crack in Time.

This spell has flash as long as you control a permanent with flash.
Put target nonland permanent on top of its owner's library.

{1}{R}, Sacrifice Crackling Seaform: Counter target spell unless its controller has Crackling Seaform deal 3 damage to them.

Exile up to two target permanents you control, then return those cards to the battlefield under their owner's control.
Audition for blue. (Create a 1/1 Construct Actor creature token, a Wizard Role giving 2/2 and prowess, or a Warlock Role giving 2/1 and flying. Roles replace older ones.)

When Crane-Style Ascetic enters, choose one —
• Create a 1/1 white Bird creature token with flying.
• Put a +1/+1 counter on target creature you control.

Harmony — Target player mills four cards.
When Creeping Pianist enters, harmonize. (Trigger up to one harmony of one permanent you control.)

Return target nonland permanent to its owner's hand.
Investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

Flying
Wanderlust — When Crest Skimmer enters, if you control four or more differently named lands, draw a card.

This spell costs {1} less to cast for each Desert you control.
When Crested Crustacean enters, return target permanent to its owner's hand.