Accursed Witch // Infectious Curse

The cost-reduction clause on the front face is bait dressed as a gift. Spells your opponents cast that target this creature cost one generic mana less, so the witch all but volunteers for a cheap removal spell. That is the entire conceit: she wants to die. Death is the trigger that flips her into a curse, and now the same discount runs the other way, shaving a generic mana off every spell you aim at the cursed player while their upkeep drains a point of life into your pocket each turn. Note the wrinkle the design leaves deliberately loose: the death trigger reattaches the curse to target opponent, not to whoever killed her, so the rebate and the life-drain can land on whichever player you actually want to grind down, regardless of who fired the removal. That choice turns a flavor gag (a witch who courts her own murder) into a real targeting decision. The two halves are built around the same clause reading as a liability before transform and an asset after, with the death trigger inverting ownership of the benefit. The Curse face is the payoff, but it cannot exist without first dangling an undersized 4/2 that opponents are happy to point spells at; the body is the fuse, not the engine. Both faces want the same event to happen, for opposite reasons, which is the cleanest expression of what double-faced cards of this lineage were built to do.