Powder Keg [Magic Player Rewards 2004] Ixalan Prerelease Promos one shouldn't underestimate its potential

one shouldn't underestimate its potential for the extraordinary

or triggered ability

Set: Judgment Type: Sorcery Rare Cost: {1}{G} You may choose a creature or land card you own from outside the game

If you lose the flip

Add an amount of {B} equal to the sacrificed creature's mana value

Powder Keg [Magic Player Rewards 2004] Ixalan Prerelease Promos one shouldn't underestimate its potentialSet: Magic Player Rewards 2004 Type: Artifact Rare Cost: {2} At the beginning of your upkeep, you may put a fuse counter on Powder Keg. {T}, Sacrifice Powder Keg: Destroy each artifact and creature with converted mana cost equal to the number of fuse counters on Powder Keg.