Unexpectedly Absent

Put target nonland permanent into its owner's library just beneath the top X cards of that library.

Wall of Omens

Defender
When this creature enters, draw a card.

War Priest of Thune

When this creature enters, you may destroy target enchantment.

Welkin Guide

Flying
When this creature enters, target creature gets +2/+2 and gains flying until end of turn.

Whitemane Lion

Flash
When this creature enters, return a creature you control to its owner's hand.

Wrath of God

Destroy all creatures. They can't be regenerated.

Arcanis the Omnipotent

{T}: Draw three cards.
{2}{U}{U}: Return Arcanis to its owner's hand.

Benevolent Bodyguard

Sacrifice this creature: Target creature you control gains protection from the color of your choice until end of turn.

Brainstorm

Draw three cards, then put two cards from your hand on top of your library in any order.

Cephalid Sage

Threshold — As long as there are seven or more cards in your graveyard, this creature has "When this creature enters, draw three cards, then discard two cards."

Control Magic

Enchant creature
You control enchanted creature.

Counterspell

Daze

You may return an Island you control to its owner's hand rather than pay this spell's mana cost.
Counter target spell unless its controller pays {1}.

Deep Analysis

Target player draws two cards.
Flashback—{1}{U}, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Diminishing Returns

Each player shuffles their hand and graveyard into their library. You exile the top ten cards of your library. Then each player draws up to seven cards.

Dream Twist

Target player mills three cards.
Flashback {1}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Eternal Masters