Sparkfire Invoked

Exile the top 6 cards of your library. For each
instant card exiled this way, deal 6 damage to
target creature or planeswalker.
Sparkfire 1 (As this card resolves, any player
may choose up to 1 card from among the exiled cards
and cast it without paying its mana cost.)
"A spark is only as scary as the flame it comes from."