Dewayne, Spell Enveloper

Flash, Flying
When Dewayne, Spell Enveloper enters the battlefield, exile target spell with converted mana
cost 5 or greater until Dewayne, Spell Enveloper leaves the battlefield.
You may cast spells exiled with Dewayne, Spell Enveloper and spend mana as though it were
mana of any type to cast it.
{2}{w/u}: Exile Dewayne, Spell Enveloper and return
it to the battlefield tapped.