Tesak, Judith's Hellhound

Unleash was always a strange keyword: a creature enters bigger but forfeits the ability to block, trading defense for a permanent aggressive posture. On a single body that tension is a coin flip; here it becomes a doctrine. By handing unleash to every other Dog and then granting haste to any creature carrying a counter, this card turns the drawback into the engine. The counter that would normally make a creature a liability on defense instead marks it for immediate attack, and because unleash's counter is the qualifying counter for the haste clause, the two abilities interlock: the same +1/+1 that commits a creature to offense also lets it swing the turn it arrives. That is the design's real cleverness. It doesn't just reward a Dog tribe; it rewards a Dog tribe that never stops attacking, because standing still is exactly what unleash punishes. The attack trigger closes the loop by refunding the aggression as a burst of red mana during the attack, adding red for each attacking creature, which can pour into combat tricks or additional instants as the swing resolves. The whole build reads as an answer to the question of what unleash was for in the first place: not a single ambivalent creature, but a critical mass of them, where the keyword's cost stops being a cost because you were going to attack with everything anyway.