Powder Keg
Urza's Destiny · Dan Frazier
Powder Keg
{2} · Artifact
At the beginning of your upkeep, you may put a fuse counter on this artifact.
{T}, Sacrifice this artifact: Destroy each artifact and creature with mana value equal to the number of fuse counters on this artifact.
Motor: se resuelve a mano
Rulings (2)
Only destroys artifacts and creatures with exactly the specified cost. It does not mean “less than or equal to”.
Wizards of the Coast · 2004-10-04
Putting on a counter is optional. If you forget, you can’t go back later even if it is something you usually do.
Wizards of the Coast · 2004-10-04