At the beginning of the end step, if you control no artifacts, sacrifice Glimmervoid.

{T}: Add one mana of any color to your mana pool.
Moxie: Chase
Standard: legal, unplayed
Modern: staple in 54 decks
Legacy: legal, unplayed
Commander: played in 54 decks
Cube: 932 @ 9.8% Pick/Pass
MTGO Cubes: Unplayed
MMA Draft: Pick (83/229)

Legacy Decks

Commander Decks

Modern Decks