Goblin Piledriver

A 1/2 for two mana looks like a body you cut, until it attacks alongside its kin and the trigger does the math: each other attacking Goblin adds +2/+0, so three friends in the red zone make it a 7/2, four make it a 9/2. The scaling is linear, but in a deck built to flood the board it climbs fast enough to end a game in one swing, which is why Goblin tribal in its prime treated this as a finisher rather than a creature. The catch keeps the whole thing honest: the bonus is all power and no toughness, with no trample and no general evasion, so a single chump blocker (any non-blue creature will do) eats the swing entirely. The Goblin deck is buying lethal damage on the condition that the path is clear, the all-or-nothing arithmetic an aggressive deck is happy to gamble on. Protection from blue is the other half of the design, and it is aimed with precision. It does nothing while the Goblin sits on the stack, so it is no answer to a counterspell, but once it resolves it cannot be blocked, dealt damage, or targeted by anything blue. Against the color whose whole plan was to trade with attackers and untap with answers in hand, a threat blue cannot interact with in combat is a clock that keeps running. The pairing is a deliberate hate piece bolted onto a payoff that punishes anyone who lets the Goblin deck go wide unanswered.