Poppy, Keeper of the Hammer

Other creatures you control have Renown 1.
Whenever a creature deals or is dealt damage, if that creature is renowned, put a Hero counter on that creature, then, if there are three or more Hero counters on it, create The Hammer of Orlon, a legendary colorless artifact equipment token with "Equipped creature gets +7/+7 and gains trample and indestructible" and Equip {10}. Equip it to that creature.