Mental Note

Thought Scour

Target player mills two cards.
Draw a card.

Drowned Secrets

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

Traumatize

Target player mills half their library, rounded down.

Dovin Baan

+1: Until your next turn, up to one target creature gets -3/-0 and its activated abilities can't be activated.
−1: You gain 2 life and draw a card.
−7: You get an emblem with "Your opponents can't untap more than two permanents during their untap steps."

Tome Scour

Replenish

Return all enchantment cards from your graveyard to the battlefield. (Auras with nothing to enchant remain in your graveyard.)