Ritual of Subdual - Ice Age - 261

Enchantment

Mana Cost: {4}{G}{G}

Cumulative upkeep {2} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
If a land is tapped for mana, it produces colorless mana instead of any other type.

Rare · Ice Age · #261 (ICE)

Illustrated by Justin Hampton