Zone of Flame - Mystery Booster 2 - 571

Enchantment — Aura

Mana Cost: {4}{R}{R}{R}

Enchant zone (Battlefield, command, exile, and stack are shared zones. Each player has their own graveyard, hand, and library zones.)
Whenever one or more cards enter or leave enchanted zone, Zone of Flame deals 1 damage to each opponent. (Tokens aren't cards.)

Rare · Mystery Booster 2 · #571 (MB2)

Illustrated by Will Liu