Make Obsolete
Instant
Creatures your opponents control get -1/-1 until end of turn.
Yesterday's marvels are today's antiques.
Illustrated by
Kaladesh#89UncommonEnglishLegality
Rulings
Sep 20, 2016
The set of creatures affected by Make Obsolete is determined as the spell resolves. Creatures your opponents begin to control later in the turn and noncreature permanents that become creatures later in the turn won’t get -1/-1.