Primal Clay

As Primal Clay enters, it becomes your choice of a 3/3 artifact creature, a 2/2 artifact creature with flying, or a 1/6 Wall artifact creature with defender in addition to its other types. (A creature with defender can't attack.)

Unsummon

Return target creature to its owner's hand.

Counterspell

Portent

Look at the top three cards of target player's library, then put them back in any order. You may have that player shuffle.
Draw a card at the beginning of the next turn's upkeep.

Urza's Bauble

{T}, Sacrifice Urza's Bauble: Look at a card at random in target player's hand. You draw a card at the beginning of the next turn's upkeep.

Boomerang

Return target permanent to its owner's hand.

Flying Men

Remove Soul

Su-Chi

Enervate

Tap target artifact, creature, or land.
Draw a card at the beginning of the next turn's upkeep.

Clairvoyance

Look at target player's hand.
Draw a card at the beginning of the next turn's upkeep.

Time Walk

Mishra's Factory

{T}: Add {C}.
{1}: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
{T}: Target Assembly-Worker creature gets +1/+1 until end of turn.

Yotian Soldier

Zuran Spellcaster

{T}: Zuran Spellcaster deals 1 damage to any target.

Island

Soul Barrier

Whenever an opponent casts a creature spell, Soul Barrier deals 2 damage to that player unless they pay {2}.

Prodigal Sorcerer

{T}: Prodigal Sorcerer deals 1 damage to any target.

Ray of Command

Untap target creature an opponent controls and gain control of it until end of turn. That creature gains haste until end of turn. When you lose control of the creature, tap it.