Decomposition is a uncommon Enchantment — Aura card from Magic: The Gathering (Mirage, MIR). Current market price: $0.18.
Uncommon
Mirage (MIR)
{1}{G}
Mana Value
2
Colors
G
Card Text
Enchant black creature
Enchanted creature has "Cumulative upkeep—Pay 1 life." (At the beginning of its controller's upkeep, that player puts an age counter on it, then sacrifices it unless they pay its upkeep cost for each age counter on it.)
When enchanted creature dies, its controller loses 2 life.
