Moriok Rigger

What this card wants is destruction, and it does not care whose. The trigger fires off any artifact leaving the battlefield for a graveyard: your own Frogmite chump-blocking, your opponent's equipment getting blown up, a Spellbomb cashed in for cards, a Darksteel piece somehow finally dying. Each one stacks another +1/+1 counter, with no cap and no condition beyond "an artifact died." In a deck built to grind through cheap artifacts (sacrifice fodder, Krark-Clan Ironworks lines, equipment that recurs), the body balloons past what a three-mana creature has any right to be. Because the counters are real and permanent, a Rigger that survives a single turn of artifact attrition becomes a clock that demands an answer. That answer is usually trivial, though: it lands as a 2/2, vulnerable to every cheap removal spell before it ever connects, and an opponent who reads the board kills it on sight rather than feed it. So it rewards a player who can make artifacts die faster than the Rigger can be removed, which is a real archetype-defining constraint rather than a free engine. It is the rare growth creature whose fuel is the same resource the deck was already spending, turning the cost of doing business into a win condition.