Brokkir, The Lost Forge God

When Brokkir, The Lost Forge God or an artifact
you control is put into the graveyard from the
battlefield, return another target artifact with lesser
mana value from your graveyard to your hand.
Sacrifice a nontoken artifact: Create a scrap token.
You may return Brokkir, The Lost Forge God
from your graveyard to your hand by exiling the
top of your library until you have exiled cards with
mana value 6 or more.