Sora, Limit Form

Form Change (This card can only be cast if a
Card with Sora In it's name is on the battlefield.
If casted, replace said card with this one.
{t}—Subtract one mana from the cost of a
scorcery, When played, for one turn.
{w}{w}{w}—Limit Burst
(Deal 5 damage to the target of your choice)