Case of the Ransacked Lab
From Murders at Karlov Manor set
Case of the Ransacked Lab
Enchantment — Case
Instant and sorcery spells you cast cost less to cast.
To solve — You've cast four or more instant and sorcery spells this turn. (If unsolved, solve at the beginning of your end step.)
Solved — Whenever you cast an instant or sorcery spell, draw a card.