Bloodshed Fever

One mana to revoke a creature's free will, and the entire transaction hinges on who profits from the swing it forces. This is compulsion as a curse: a one-sided cousin of goad's mechanic, with no clause forcing the attack away from its controller. Where goad forces a creature to attack and bars it from swinging at its caster, this Aura simply strips the defensive option, dragging an enemy body into a combat step it would rather sit out. The "if able" clause is the seam the whole design rests on. A creature with defender cannot attack and is therefore immune, which means the Aura was never built to crack a wall; it was built to pull a deterrent off the back foot. Force a punishing blocker to attack and it taps in the process, leaving it unable to guard the following turn: the controller no longer gets to hold a deathtouch body or a sacrifice threat in reserve, because the thing has to commit every combat, where it can be ambushed, double-blocked, or simply left out of position. The cost of all this is that an Aura is card disadvantage by nature, and a spell that grants no stats, no haste, no protection is a narrow lever pointed at a single creature. The target can still be sacrificed, still answered outright; what it loses is the freedom to abstain. That makes it less a removal substitute than an enabler for punisher and combat-tax shells, where forcing the swing is the payoff rather than incidental damage.