Albedo, The Chalk Prince

Whenever you activate an ability of an artifact that
isn't a mana ability, you may pay {1}{r/w}. If you do,
choose one that hasn't been chosen this turn —
• Investigate.
• Create a tapped Powerstone token.
• Copy that ability. You may choose new targets for
the copy.
{bull} You may pay {x}{x}. If you do, exile target artifact
card with mana value X or less from your graveyard
and create a legendary token copy of it.