Adaptive Armorer

The first Merfolk spell you cast each turn has convoke. At the beginning of your end step, if you control two or more tapped creatures, conjure a card named Stonybrook Schoolmaster onto the battlefield tapped.

Choose one — • Seek a Kithkin card. At the beginning of the next end step, if that card is in your hand, exile it. • Creature cards in your hand perpetually get +1/+1.

Draw two cards, then put two cards from your hand on the bottom of your library in any order. Blue creature cards in your hand perpetually gain "Evoke—Exile a blue card from your hand."

When this artifact enters, conjure a card named Ponder into your hand. Whenever one or more Merfolk you control deal combat damage to a player, sacrifice this artifact. If you do, conjure a card named Flooded Strand into your hand.

When this creature enters, you get a one-time boon with "When you cast an instant or sorcery spell with mana value 3 or less, copy it. You may choose new targets for the copy."

Flying Double team Whenever you cast a spell during an opponent's turn, draft a card from Thoughtsteal Sprites's spellbook, then discard a card. This ability triggers only once each turn.

When this enchantment enters, creature cards in your graveyard perpetually get +1/+1. Blight X, Return this enchantment to its owner's hand: Return target creature card with mana value X or less from your graveyard to the battlefield. X can't be greater than the greatest toughness among creatures you control. Activate only as a sorcery.

Wither When this creature enters, conjure a card named Blowfly Infestation onto the battlefield. Then put a -1/-1 counter on each creature. Evoke—1BB, Pay 3 life.