Slashing Tiger

The blocking trigger turns a fair-rate body into a punishment for the defender: declare a blocker and the 3/3 becomes a 5/5 mid-combat, swinging trades that should have been clean. This is the inverse of the trample line of thinking, where excess damage spills over. Here the attacker would rather be blocked, because the boost lands only when something steps in front. It rewards the defender who lets the creature through and penalizes the one who tries to trade, which inverts the usual combat math where blocking is the controlling player's lever. The catch is that the bonus is reactive and lasts only the turn: nothing happens if the path stays open, so the body is a plain 3/3 against an empty board and the upside exists entirely at the opponent's discretion. That makes it less a threat than a tax, a green common-style aggressor whose whole pitch is making a profitable block impossible without overcommitting. It belongs to a small family of creatures that grow when blocked rather than when unblocked, a design that quietly discourages chump-blocking and double-blocking alike: send two small bodies in and the tiger eats both.