Krenko, Baron of Tin Street

Every previous Krenko has read your board as a token count: the Mob Boss doubles whatever Goblins you already have, the Tin Street Kingpin tramples for it. This one reads your board as an artifact supply, and that reroutes the whole engine. Sacrificing an artifact is no longer a means to some other end; it is the fuel line for two payoffs at once, pumping the team through the tap ability and, if you have the red to spare, spawning a fresh hasty Goblin off the death trigger. The counters matter because they outlast the lord: kill this Krenko and a static anthem would collapse the whole team back to 1/1s, but +1/+1 counters are baked onto each body, so a swarm of one-drops carrying three or four counters apiece is a clock that keeps ticking after this Krenko is gone. What makes the design sharp is that the two artifact abilities feed each other off the same resource. The tap requires you to sacrifice; the trigger only asks that an artifact die from any source, including sacrifice, so a single Treasure cracked for mana can pay for its own token before it ever touches the counter engine. That reflexive loop (spend an artifact, get a body, feed the counters) is the closest a Goblin lord has come to a genuine sacrifice-aristocrats build rather than a go-wide dogpile. The haste on the front is the tell: this Krenko wants to convert artifacts into pressure the turn it lands, not sit back and multiply.