Callus, Lich's Apprentice

Whenever you cast a Instant or Sorcery spell
from your graveyard, you may discard two cards.
if you do, that spell gains Casualty 2.
{2}{t} :Target spell in your graveyard gains
Jump-Start.
If a permantent you controls Jump-Start ability
would exile it, instaid exile it when it is put into
your graveyard from the battlefield.