Basterd, Master Tinker

Basterd, Master Tinker's attack value is
equal to the number of artifacts you control.
{1}{r},{t}: Give target artifact you control:
"{r},{t}: Deal 2 damage to
target nonland permanent"
{1}{u},{t}: Give target artifact you control:
"{2}{u},{t}: Draw 1 card"
While Basterd, Master Tinker is in the
Command Zone, your artifact spells
cost {1} less to cast.