Metalsmith's Chained God

Flying, Intimidate, Haste
This creature cannot be blocked by creatures
with reach.
Metalsmith's Chained God's power and
toughness is equal to the number of artifact
creatures you control.
{b}{b}{b}{t}: Deal X damage to target planeswalker.
X equals the number of creatures you control.
{1}{b}{t}: Deal X damage to target creature. X
equals the power of this creature.