Hans

Indestructible, Hexproof, Scrap 10, Build 15
This creature costs {1} mana less to cast for each artifact you control.
Whenever an enemy creature dies, put {x} scrap
tokens onto the battlefield, where {x} is the
converted mana cost of that creature.
{t} Sacrifice {x} scrap tokens: Deal {x} damage
divided among any number of targets.
If you're going through hell, keep going