Scion of Vitu-Ghazi | Creature | Elemental | When Scion of Vitu-Ghazi enters the battlefield, if you cast it from your hand, create a 1/1 white Bird creature token with flying, then populate. (Create a token that's a copy of a creature token you control.) | Willian Murai
Possibility Storm | Enchantment | | Whenever a player casts a spell from their hand, that player exiles it, then exiles cards from the top of their library until they exile a card that shares a card type with it. That player may cast that card without paying its mana cost. Then they put all cards exiled with Possibility Storm on the bottom of their library in a random order. | Jason Felix
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
Obzedat's Aid | Sorcery | | Return target permanent card from your graveyard to the battlefield. | Dan Scott
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
Zhur-Taa Ancient | Creature | Beast | Whenever a player taps a land for mana, that player adds one mana of any type that land produced. | Adam Paquette