Discontinuity [Core Set 2021 Prerelease Promos]Set: Core Set 2021 Prerelease Promos Type: Instant Rarity: Mythic Cost: {3}{U}{U}{U} As long as it's your turn, this spell costs {2}{U}{U} less to cast. End the turn. (Exile all spells and abilities from the stack, including this card. The player whose turn it is discards down to their maximum hand size. Damage wears off, and "this turn" and "until end of turn" effects end.)