Storm Sanctum

Storm Sanctum enters the battlefield tapped.
When Storm Sanctum enters the battlefield,
search your library for up to one instant or
sorcery card and exile it face-down, then shuffle.
{2}{u}, {t}: Cast an instant or sorcery card exiled
by Storm Sanctum without paying its mana cost. Activate only if you lost 7 or more life this turn.
{t}: Add {u}.