Barrels of Blasting Jelly (TLA)

Artifact

{1}: Add one mana of any color. Activate only once each turn. {5}, {T}, Sacrifice this artifact: It deals 5 damage to target creature.

Niche mana rock for budget-conscious casual decks, but the color-fixing comes with severe restrictions and the sacrifice mode is too slow and expensive to justify inclusion over established alternatives. The once-per-turn activation on a single mana makes it substantially worse than Llanowar Elves or Chromatic Mana, while the damage effect is too inefficient to serve as a meaningful removal option in any competitive format.

Avatar: The Last Airbender — Common