Whenever you cast a blue spell, target player mills two cards.

Whenever you cast a historic spell, target player mills two cards. (Artifacts, legendaries, and Sagas are historic.)

, : Target player mills two cards.

Constellation — Whenever an enchantment you control enters, target player mills two cards.

Whenever this creature deals damage, target player mills that many cards.

Whenever you draw a card, you may have target player mill a card.

Landfall — Whenever a land you control enters, target player mills three cards. (They put the top three cards of their library into their graveyard.)

Whenever a player casts a spell, that player may pay . If the player does, they draw a card.

: Target player mills a card.

Whenever another snow permanent you control enters, you may have target player mill two cards.

When this creature enters, you get (two energy counters).

, Pay : Target player mills three cards.

When this creature enters, target player mills a card.

Whenever you cast an artifact spell, you may draw a card. If you do, discard a card.

Whenever you cast a creature spell, you may pay . If you do, draw a card, then discard a card.

Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, target player mills two cards. (They put the top two cards of their library into their graveyard.)

Blurry (This creature can be blocked only if defending player was wearing glasses as it was cast.)

Whenever this creature deals combat damage to a player, you may draw a card. If you do, discard a card.

All Slivers have ": Target player mills a card."

Whenever you cast a Spirit or Arcane spell, you may sacrifice this creature. If you do, draw a card.