Hasdar, the Iron Vanguard

Reach
As an additional cost to this creature, sacrifice X permanents. Hasdar's power is equal to to the
amount of permanents you control sacrificed this
way. X can't be 0.
Whenever an artifact enters the battlefield, you
may sacrifice it, if you do, Hasdar gets +2/+2
until end if turn.
Strenthened by the fine steel of his kin