Izzet Boltcaster

Whenever Izzet Boltcaster is dealt damage, deal 2x
that amount of damage to the controller of the
source of that damage.
{8}{u/r}{u/r}{u/r}: Name an instant or sorcery card. You
may search your library for up to four copies of
that card and play them without paying their
mana costs.
When Izzet Boltcaster dies, exile it, add
{u}{u}{r}{r}to your mana pool, and deal 5 damage
to all enemy players, planeswalkers, and creatures.