Galvanic Blast
Instant (CMC 1)
Galvanic Blast deals 2 damage to any target.
Metalcraft -- Galvanic Blast deals 4 damage instead if you control three or more artifacts.
Decks with Galvanic Blast
[2XM] Double Masters #125 (U)
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[SOM] Scars of Mirrodin #91 (C)
[DDU] Duel Decks: Elves vs. Inventors #45 (C)
[MB1] Mystery Booster #943 (C)