Thought Collapse

Counter target spell. Its controller mills three cards.

Faerie Duelist

Flash
Flying
When Faerie Duelist enters, target creature an opponent controls gets -2/-0 until end of turn.

Anticipate

Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

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.

Scry 1. (Look at the top card of your library. You may put that card on the bottom.)
Draw a card.

Island

Cloudkin Seer

Flying
When Cloudkin Seer enters, draw a card.

Didn't Say Please

Frantic Inventory

Draw a card, then draw cards equal to the number of cards named Frantic Inventory in your graveyard.

Venture Deeper

Target player mills four cards. (Then exile this card. You may cast the creature later from exile.)