Stellarnova Alpha is a Counter Trap Card.
Trap Cards are normally Set first and can be activated on a later turn, often in response to an action.
On the current TCG and OCG Forbidden & Limited lists tracked here, Stellarnova Alpha is Unlimited.
YGOPRODeck lists Stellarnova Alpha for these formats: Duel Links, TCG, OCG, Master Duel.
Stellarnova Alpha belongs to the Tellarknight archetype—use that tag when searching for engine pieces and tech options.
A listed print of Stellarnova Alpha appears in 2015 Mega-Tin Mega Pack (MP15-EN113) at Ultra Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Stellarnova Alpha is about $3.00 on eBay (prices change frequently).
