Dunerider Outlaw

Black almost never gets a creature that grows from connecting in combat; that engine has lived in red, where the Slith line turned an early hit into a snowballing clock. Take that escalation, give it protection from green, and you have a small attacker built to keep attacking. The growth clause does the familiar work: damage to an opponent at end step means a counter, a bigger body, a faster clock. The protection is what keeps the loop fed. Green is the color of fat blockers and ambush tricks, the creatures most likely to stand in front of a one-power threat and deny it the trigger; none of them can block this at all, none can be the chump that denies it the counter. The two abilities are deliberately one-directional: protection clears the lane, the damage builds the body, and a 1/1 nobody green can profitably block becomes a 2/2, then a 3/3, on a curve that only steepens. The cost of all that is the starting stat line. The trigger requires the attack to actually land, turn after turn; stop connecting, or get answered before the end step, and the counters never arrive. It is evasion married to escalation, with fragility as the price of admission.