Persistent Petitioners

{1}, {T}: Target player mills a card. (They put the top card of their library into their graveyard.)
Tap four untapped Advisors you control: Target player mills twelve cards.
A deck can have any number of cards named Persistent Petitioners.

Gut Shot

({R/P} can be paid with either {R} or 2 life.)
Gut Shot deals 1 damage to any target.

Snap

Return target creature to its owner's hand. Untap up to two lands.

Spell Pierce

Counter target noncreature spell unless its controller pays {2}.

Island

Tome Scour

Thought Scour

Target player mills two cards.
Draw a card.

Counterspell

Jace's Erasure

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