Aedryanna, Temporal Witch

Players can only cast instant spells any time they
could cast a sorcery spell, and opponents can't
cast sorcery spells from their hands, graveyards,
or libraries. Any player may ignore this effect for
one spell as they cast it by also paying life equal
to the converted mana cost of that spell plus one.
All sorcery cards have suspend 1. Their suspend
cost is equal to their casting cost minus {1}.
(It's actually just for the converted mana cost...)