"Gold without freedom might as well be lead."
—Angrath

Foundations

Gleaming Barrier

Defender
When this creature dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Jumpstart 2022

Defender
When Gleaming Barrier dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Double Masters

Rivals of Ixalan

Defender
When Gleaming Barrier dies, create a colorless Treasure artifact token with "{T}, Sacrifice this artifact: Add one mana of any color to your mana pool."