Wilds of Eldraine

Chancellor of Tales | Creature | Faerie Advisor | Flying Whenever you cast an Adventure spell, you may copy it. You may choose new targets for the copy. | Joshua Raphael

Galvanic Giant | Creature | Giant Wizard | Whenever you cast a spell with mana value 5 or greater, tap target creature an opponent controls and put a stun counter on it. | Borja Pindado

Splashy Spellcaster | Creature | Elemental Wizard | Whenever you cast an instant or sorcery spell, create a Sorcerer Role token attached to up to one other target creature you control. (If you control another Role on it, put that one into the graveyard. Enchanted creature gets +1/+1 and has "Whenever this creature attacks, scry 1.") | Brian Valeza

Threadbind Clique | Creature | Faerie | Flying | Michal Ivan

Sharae of Numbing Depths | Legendary Creature | Merfolk Wizard | When Sharae of Numbing Depths enters the battlefield, tap target creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.) Whenever you tap one or more untapped creatures your opponents control, draw a card. This ability triggers only once each turn. | Evyn Fong

Johann, Apprentice Sorcerer | Legendary Creature | Human Wizard | You may look at the top card of your library any time. Once each turn, you may cast an instant or sorcery spell from the top of your library. (You still pay its costs. Timing rules still apply.) | Dmitry Burmak