Brightwallice Innovation

Whenever an nontoken artifact you control
leaves the battlefield, you may pay {2}. If you do,
create a 0/1 colorless Prism artifact creature
token.
Sacrifice a Prism token: Add one mana of any
color. Then, if mana produced this way would
be spent on an artifact spell, you may add one
mana of any color not previously produced by
Brightwallice Innovation this turn.