War of the Spark

Invade the City | Sorcery | | Amass X, where X is the number of instant and sorcery cards in your graveyard. (Put X +1/+1 counters on an Army you control. If you don't control one, create a 0/0 black Zombie Army creature token first.) | Sung Choi

Role Reversal | Sorcery | | Exchange control of two target permanents that share a permanent type. | Mathias Kollros

Saheeli, Sublime Artificer | Legendary Planeswalker | Saheeli | Whenever you cast a noncreature spell, create a 1/1 colorless Servo artifact creature token. −2: Target artifact you control becomes a copy of another target artifact or creature you control until end of turn, except it's an artifact in addition to its other types. | Wesley Burt