Crackle Of Invention

Look a the top four cards of your library. You may
exile up to two of those cards. Put the rest into your
graveyard. Crackle Of Invention deals 1 damage to
you for each card put into your graveyard this way.

You may cast artifact and / or instant spell cards
exiled this way. If you do, those spells cost {1} less
to cast.