Urum, Darksteel Sovereign

Trample, indestructible
{1}{p/c}, Put a -1/-1 counter on Urum: Create a colorless Darksteel Ingot token.(It's an artifact
that has indestructible.)
{3}{p/c}, Sacrifice an artifact named Darksteel
Ingot: Target artifact gains indestructible. If
life was paid to activate this ability, put a +1/+1
counter on Urum.