Roilmage's Trick | 83 | Battle for Zendikar

Set: Battle for Zendikar
Rarity: C
#: 83
Creature Type or Sub Type: Instant
Rules Text Contains: Converge — Creatures your opponent control get -X/-0 until end of turn, where X is the number of colors of mana spent to cast Roilmage's Trick.
Draw a card.
Flavor: Weather on Zendikar is unpredictable—unless you're the one telling it what to do.