msem-instigator

Target player reveals their hand. You choose three cards from it and exile them. Then that player exiles the top three cards of their library.

Whenever Twilight Dancer attacks, harmonize. (Trigger up to one harmony of a permanent you control.)
Harmony — Each player loses 1 life and mills a card.

Search your library for up to two land cards with basic land types, put them onto the battlefield, then shuffle. Sacrifice two lands at the beginning of the next end step.

Whenever Whitepeak Channeler deals combat damage to a creature, tap that creature. That creature doesn't untap during its controller's next untap step.

Creature tokens you control get +1/+1.
{3}{W}: Create a 1/1 white Warrior creature token.

Search your library for a Dragon card, reveal it, put it into your hand, then shuffle. It deals damage equal to its power to you.

{T}: Add {C}.
{T}, Exile two cards from your graveyard: Add {U} or {R}.

Put target creature card from a graveyard onto the battlefield under your control. If it doesn't have vanishing, put three time counters on it and it gains vanishing. (At the beginning of your upkeep, remove a time counter from that permanent. When the last is removed, sacrifice it.)

Spells your opponents cast that target Sheltered Snowman cost {2} more to cast.
Whenever you cast a spell from exile, put a +1/+1 counter on Sheltered Snowman. It can't be blocked this turn.

Deception {B} ({B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
When Oshiruko Operative enters, target player loses 1 life.

Rustshell Crustacean gets +1/+1 for each artifact you control.
Whenever Rustshell Crustacean attacks, choose one —
• Search your library for an Equipment card, reveal it, and put it into your hand, then shuffle.
• Create a Treasure token.

Whenever Current Shaper perseveres, it deals 1 damage to each opponent. (A creature perseveres when it survives damage.)

Reveal the top seven cards of your library. You may put a creature card from among them onto the battlefield. Put the rest into your graveyard. Then flip a coin. If you win the flip, return Primal Evocation to its owner's hand.

At the beginning of your upkeep, exile the top card of your library. Until end of turn, you may play that card if it's an instant or sorcery card.

When Captured Mind dies, create a 3/3 white Construct enchantment creature token.

Trample, haste
Respawn (When this creature dies, if it attacked this turn, return it to its owner's hand.)
At the beginning of your end step, sacrifice a creature.

Lifelink
Whenever you gain life, each opponent loses 1 life.

When Prophetic Prismite enters, draw a card.
{2}: Add one mana of any color.

Whenever you attack or block with one or more other creatures, Wehre-District Patrollers gets +1/+0 and gains first strike until end of turn.

Aetherize target creature you control. (To aetherize, create a token that's a copy of it, then exile that token.)
Draw a card.

Defender (This creature can't attack.)
Mirage {0} (You may cast this spell as though it had flash for its mirage cost. If you do, sacrifice it at the beginning of the next cleanup step.)

Defender
When Wall of Rime enters, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Destroy target tapped creature.

When Path to Battle enters, draw a card, then choose a card name.
Whenever you cast a noncreature spell with the chosen name, create a 1/1 red Warrior creature token with haste.

{T}: Add {C}.
{3}, {T}, Sacrifice Treasure Beach: Create three Treasure tokens. (They have “{T}, Sacrifice this artifact: Add one mana of any color.”)