Burning-Yard Trainer

Five mana for a 3/3 is a rate no aggressive deck wants to hear, which tells you the body was never the point. This is a payoff card wearing a beater's clothes: the enters-the-battlefield trigger hands a fellow Knight +2/+2 alongside trample and haste, and the surprise-damage math is where the design earns its keep. Because the trainer arrives with its own haste, the freshly buffed Knight can be one you cast the same turn: play a threat, drop the trainer, and both crash in for a combined swing the opponent could not have blocked or blocked out of. That is the operative half of the effect: granting haste turns a Knight that would otherwise sit summoning-sick into a second attacker, so the +2/+2 lands where it matters most. The design leans entirely on there being another Knight worth pumping, so the card reads as a capstone for a tribe rather than a standalone threat. Absent a Knight-dense board it still swings for three with trample and haste of its own, which is the honest floor of a reward built this deep into a tribe: the ceiling is a doubled alpha strike on the right battlefield, the floor is an overpriced hasty body that at least attacks the turn it lands.