Phyrexian metal-caster

When Phyrexian metal-caster enters the battlefield create two 1/1 myr creature tokens with “when this creature dies you take 1 damage”.
Infect
{t}{2} sacrifice an artifact: add {c}{c}{c}
{1}{t} Sacrifice an artifact creature: exile the top two cards of your library, until the end of your next turn you may play those cards.
When Phyrexian metal caster dies you gain life egual to the amount of artifacts in your graveyard and in exile.