msem-instigator

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

Enchant land
When Cradle of Civilization enters, search your library for a basic land card, reveal it, put it into your hand, then shuffle.
Enchanted land has “{T}: Add one mana of any color.”

Cradle of Corruption enters tapped.
Whenever a creature dies, put a creation counter on Cradle of Corruption.
{T}, Remove ten creation counters from Cradle of Corruption and sacrifice it: Put up to two target creature cards from graveyards onto the battlefield under your control. Activate only as a sorcery.

{3}, {T}: You may put an artifact card with mana value 3 or less from your hand onto the battlefield. This ability costs {1} less to activate for each other artifact you control.

For each creature you control, create a token that's a copy of it. They gain haste. Sacrifice them at the beginning of the next end step.

Crafted Coast enters tapped unless another player controls a land that could produce {W} or {U}.
{T}: Add {W} or {U}.

Equipped creature gets +2/+0 and has flying.
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

Crafter's Mistake deals 1 damage to target player or planeswalker. That player or that planeswalker's controller sacrifices an artifact.

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.)

This spell costs {X} less to cast, where X is 20 minus your life total.
First strike, menace, trample

Flying
Cragstalker Eagle gets +2/+2 as long as you've cast a creature spell and a noncreature spell this turn.
You may cast Adventure spells and spells with Adventures from your hand as though they had flash.

Menace
Whenever you sacrifice an artifact or creature, Crain's Crew gets +1/+1 until end of turn.

Whenever Crain's Crony enters or attacks, reveal the top card of your library and put it into your hand. You lose life equal to that card's mana value.
At the beginning of each end step, if you didn't lose life this turn, you lose the game.

Prowess
When Cramming Student enters, conjure ten cards named Fatigue and shuffle them into your library. (They're colorless sorceries that cost {2} and have “Draw a card.”)
Instant and sorcery spells you cast cost {1} less to cast.

Once each turn, you may reveal a creature card as you draw it. Whenever you do, create a 1/1 green and blue Bird creature token with flying and “{T}: Add one mana of any color.”
Whenever three or more creatures you control deal combat damage to a player, untap each creature you control.

Flying
Whenever Crane Legionnaire attacks, tap target creature defending player controls.

Enchant creature
Enchanted creature gets +1/+3 and has flying.

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.

{2}, Exile Cranial Archive: Target player shuffles their graveyard into their library. Draw a card.

Flash
When Cranial Glass enters, exile target card from a graveyard.
{7}, {T}, Sacrifice Cranial Glass: Copy the exiled card. You may cast the copy without paying its mana cost. (A copy of a permanent spell becomes a token.)

Each player reveals their hand. Choose a creature card revealed this way. Its owner discards it.
{2}{B}{B}, Exile Cranial Violation and six other cards from your graveyard: Put target creature card from a graveyard onto the battlefield under your control. Activate only as a sorcery.

Target creature gets +X/+0 and gains trample until end of turn.

Creatures you control gain trample until end of turn.
Draw a card.

Look at the top four cards of your library. You may reveal a land card from among them and put it into your hand. Put the rest on the bottom of your library in any order.
Dominance — You may reveal a creature card from among them instead if you control the creature with the greatest power or tied for the greatest power.