Oraan, Revenant Conjuror

At the beginning of your upkeep, gain {x} life,
where {x} is equal to the number of instant and
sorcery cards in your graveyard.
Sacrifice Oraan, Revenant Conjuror: Add an
amount of mana in any combination of colors to
your mana pool equal to the number of instant
and sorcery cards in your graveyard. Use this
mana only to cast instant and sorcery spells and
those spells can't be countered. Exile your
graveyard.