Amulet of Spell Storing

At the beginning of your upkeep, if Amulet of
Spell Storing is attached to a creature and there
are no cards exiled with Amulet of Spell Storing,
you may exile an instant or sorcery card with
mana value 5 or less from your hand.
Equipped creature has "{t}: Cast a card exiled
with Amulet of Spell Storing without paying its
mana cost."
Equip {2}