Truefire Captain

The damage-reflection clause inverts the usual logic of toughness. Most creatures want to survive combat and burn; this one turns getting hit into a weapon, because whatever damage it takes gets routed at a player of its controller's choosing. Block it with a big creature and that damage comes back around. Point a burn spell at it and the burn boomerangs. The redirection is a triggered ability its controller owns, which is the sharp end of the design: the opponent decides how much damage to deal it, but not where that damage lands. That asymmetry is what makes engaging with it a trap. It also cuts the other way for the aggressor, who can point their own damage source at it (something like Blasphemous Act, or any pinger) and choose to send the reflected total straight at the opponent's face, weaponizing the fragility on purpose rather than waiting to be attacked. Mentor sweetens the plan, growing a smaller attacker each swing, but the reflection is why the card commands respect: killing it is a decision the opponent makes and the controller profits from. It is a Boros-colored answer to the question of how an aggressive creature punishes interaction, built on the idea that the cleanest way to protect a threat is to make dealing with it hurt the one who tries.