Aetherling | Creature | Shapeshifter | {U}: Exile Aetherling. Return it to the battlefield under its owner's control at the beginning of the next end step.
{U}: Aetherling can't be blocked this turn.
{1}: Aetherling gets +1/-1 until end of turn.
{1}: Aetherling gets -1/+1 until end of turn. | Tyler Jacobson
Lavinia of the Tenth | Legendary Creature | Human Soldier | Protection from red
When Lavinia of the Tenth enters the battlefield, detain each nonland permanent your opponents control with mana value 4 or less. (Until your next turn, those permanents can't attack or block and their activated abilities can't be activated.) | Willian Murai
Mirko Vosk, Mind Drinker | Legendary Creature | Vampire | Flying
Whenever Mirko Vosk, Mind Drinker deals combat damage to a player, that player reveals cards from the top of their library until they reveal four land cards, then puts those cards into their graveyard. | Chase Stone
Notion Thief | Creature | Human Rogue | Flash
If an opponent would draw a card except the first one they draw in each of their draw steps, instead that player skips that draw and you draw a card. | Clint Cearley
Melek, Izzet Paragon | Legendary Creature | Weird Wizard | Play with the top card of your library revealed.
You may cast instant and sorcery spells from the top of your library.
Whenever you cast an instant or sorcery spell from your library, copy it. You may choose new targets for the copy. | Jason Chan
Vorel of the Hull Clade | Legendary Creature | Human Merfolk | {G}{U}, {T}: Double the number of each kind of counter on target artifact, creature, or land. | Mike Bierek