msem-instigator

Pressure {B}
Search your library for a card, put it into your graveyard, then shuffle. You gain 2 life.

Whenever Bygone Wreck deals combat damage to a player, you may sacrifice it. If you do, create five Treasure tokens.
Crew 1

During your turn, cards in your hand have cycling {X}, where X is the number of cards you've discarded this turn.
At the beginning of each end step, create a 1/1 blue Tentacle creature token for each card you discarded this turn.
Cycling {R}

Cannoncoil Hermit enters the battlefield with X +1/+1 counters on it.
{1}, {T}: Put a +1/+1 counter on Cannoncoil Hermit.
{1}, {T}, Remove a +1/+1 counter from Cannoncoil Hermit: It deals damage equal to its power to any target.
{3}: Untap Cannoncoil Hermit.

Flash
When Cast Out enters the battlefield, exile target nonland permanent an opponent controls until Cast Out leaves the battlefield.
Cycling {W}

Charbroiled Core enters the battlefield tapped unless you have two or more opponents.
{T}: Add {B} or {R}.

Chiseled Cliffside enters the battlefield tapped unless you have two or more opponents.
{T}: Add {R} or {W}.

Concord — Whenever Chitinborn Sentry attacks, if there are four or more card types among permanents you control, prevent all damage that would be dealt to target attacking creature this turn.

Circling Predators deals X damage to each creature, where X is 2 plus the number of cards with a cycling ability in your graveyard.
Cycling {2}

Pressure {B}{G}
Search your library and/or graveyard for a creature card with mana value 3 or less and put it onto the battlefield. If you searched your library this way, shuffle it.

Slipstream
Whenever Conchhorn Shinygrabber attacks, you may pay {1}. If you do, create a Treasure token.
{W}{U}{B}{R}{G}: Conchhorn Shinygrabber gets +3/+3 and gains lifelink until end of turn.

{T}: Conchspear Hunter deals 1 damage to any target. Activate only if you control three or more artifacts.

Concord — When Coral Bruiser enters the battlefield, 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 the battlefield, 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.

Slipstream
Cycling {U}

Vigilance, trample
Whenever you draw your second card each turn, put a +1/+1 counter on Coralblade Cohort.
Cycling {G}

Exile target creature with power 4 or greater.
Create a Treasure token.

You may play Coralight Castle from your graveyard if there are seven or more cards in your graveyard.
Coralight Castle enters the battlefield tapped.
{T}: Add {W} or {U}.
Cycling {1}{W}{U}

When Coralight Champion enters the battlefield, create a white Aura enchantment token named Hila's Favor attached to target creature. The token has enchant creature and “Enchanted creature has first strike and gets +1/+1 for each other creature you control.”

{3}{W}: Tap target creature. Activate only during your turn.

Concord — When Coralight Communer enters the battlefield, if there are four or more card types among permanents you control, draw a card.

Flash
When Coralight Lifebloom enters the battlefield, create a green Aura enchantment token named Kelpcrown attached to target creature you control. The token has enchant creature and “Enchanted creature has hexproof.”

When Coralight Mystic enters the battlefield, create a white Aura enchantment token named Whale's Spirit attached to target creature. The token has enchant creature and “Enchanted creature has lifelink.”

When Coralight Paladin enters the battlefield, you may search your library for an artifact card, reveal it, then shuffle and put that card on top.
Concord — Whenever Coralight Paladin attacks, if there are four or more card types among permanents you control, Merfolk you control get +1/+1 until end of turn.

Vigilance
When Coralight Sentinel enters the battlefield, create a white Aura enchantment token named Crab's Resolve attached to target creature. The token has enchant creature and “Enchanted creature gets +0/+2.”