Xul, Cryptic Necromancer

Deathtouch, Flash.
When Xul, Cryptic Necromancer enters the
battlefield, you may sacrifice an artifact. If you
do, create an X/X Metal Golem artifact creature
token, where X is twice the mana value of the
sacrificed artifact.
{t}, pay 2 life: Crate a 1/1 Skeleton Mage creature
token with "{t} this creature deals 1 damage to
any target".