Mana Chains - Weatherlight - 41

Enchantment — Aura

Mana Cost: {U}

Enchant creature
Enchanted creature has "Cumulative upkeep {1}." (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.)

Common · Weatherlight · #41 (WTH)

Illustrated by Bryan Talbot