Professor's Warning
Two combat tricks folded into one mana, and the split between them is the tell of who this card was built for. The first mode is a permanent buff, the kind of counter that matters most in a deck already stacking them; the second is a one-turn indestructible shield, priced to fog a burn spell or blank a wrath aimed at a single body. The modal design earns its keep because both halves leave value on the table: the counter sticks around even when the opponent declines to fight, so holding it up never feels dead. Black rarely gets access to protection this clean, which is the quieter point here. Indestructible is a white and green idiom by tradition (Blossoming Defense, the various fogs and vigilance grants), and handing black an instant-speed answer that dodges destroy effects and combat damage nudges the color slightly off its usual lane, where the fix for a threatened creature is more often trading, sacrificing for value, or simply having a bigger one. As a one-mana instant it also plays honestly with the stack: you can wait for the removal or the block, then choose which half the situation asks for. It is a small card doing a specific job, but the job (cheap flexibility that never rots in hand) is one black does not often get to do.
