Obsianus Golem

Ancestral Recall

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.

Clone

You may have Clone enter the battlefield as a copy of any creature on the battlefield.

Prodigal Sorcerer

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

Island

Clairvoyance

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

Power Sink

Counter target spell unless its controller pays {X}. If that player doesn't, they tap all lands with mana abilities they control and lose all unspent mana.

Unsummon

Return target creature to its owner's hand.

Mana Short

Tap all lands target player controls and that player loses all unspent mana.

Control Magic

Enchant creature
You control enchanted creature.

Sol Ring

Flying Men

Twiddle

You may tap or untap target artifact, creature, or land.

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.

Mana Drain

Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value.

Colossus of Sardia

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Colossus of Sardia doesn't untap during your untap step.
{9}: Untap Colossus of Sardia. Activate only during your upkeep.