Xristos, the Builder

Trample, indestructible
{g}{g}, {t}: Xristos fights target creature.
{4}{g}{g}{w}{w}: Monstrosity 5.
Whenever Xristos deals combat damage to a
player, if Xristos is monstrous, destroy target
artifact or enchantment that player controls.
At the beginning of your end step, create a 0/0
colorless Construct artifact creature token with
"This creature gets +1/+1 for each
artifact you control."