Gleaming Masterwork

When Gleaming Masterwork enters the battlefield, create ten colorless Shard artifact
tokens with shroud. Each time a Shard under
your control leaves the battlefield you may choose
one.
-Gain 8 life; Counter target spell; Create a
token copy of target creature you control; Exile
target creature.
If you control no Shard tokens, exile Gleaming Masterwork.