Damage Condenser is a Normal 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, Damage Condenser is Unlimited.
YGOPRODeck lists Damage Condenser for these formats: Duel Links, Speed Duel, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Damage Condenser appears in Dark Revelation Volume 4 (DR04-EN172) at Super Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Damage Condenser is about $0.05 on TCGPlayer (prices change frequently).
