Black Illusion 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, Black Illusion is Unlimited.
YGOPRODeck lists Black Illusion for these formats: Duel Links, TCG, OCG, Master Duel.
A listed print of Black Illusion appears in Yugi's Legendary Decks (YGLD-ENC00) at Secret Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Black Illusion is about $0.19 on Cardmarket (prices change frequently).
