Steadfast Cathar

A 2/1 that fights better than it defends. The attack trigger turns a fragile body into a 2/3 the moment it commits to the red zone, which addresses the perennial problem with cheap white aggressive creatures: they trade badly into blockers and die to a stiff breeze. The toughness bump only shows up when the Cathar swings, so it survives the combat it starts while staying small at home, where it never needs the extra point anyway. That asymmetry is the whole design: this is an attacker, not a wall, and the +0/+2 is the reward for keeping the pressure on rather than sitting back. The important detail is that the boost is a triggered ability, not a static one. It resolves after the declaration of attackers, which leaves a window: an opponent holding instant-speed removal can answer the trigger while the Cathar is still a 2/1 and kill it before the toughness ever lands. So the 2/3 is a promise, not a guarantee, and a defender deciding whether to block has to weigh whether they would rather spend a removal spell in that window or eat the larger body in combat. It is a modest creature doing a modest job, but the design is honest about what white weenie wants from its two-drops: bodies that press an advantage and survive the block they provoke, even if the same trigger that toughens them is exactly what tips off the removal.