Herbology Instructor // Malady Invoker

When Herbology Instructor enters the battlefield, you gain 3 life.

: Transform Herbology Instructor. Activate only as a sorcery. ( can be paid with either or 2 life.)

When this creature transforms into Malady Invoker, target creature an opponent controls gets -0/-X until end of turn, where X is Malady Invoker's power.