Albert Einstein

{x}{u}: Target spell with converted mana cost X on the stack resolves next after this spell.
{x}{x}{r}{t}: Target spell On the stack with converted mana cost X resolves as if it had overload and was cast for its overload cost. (You may cast that spell for its overload cost. If you do, change its text by replacing all instances of 'target' with 'each'.)
The distinction between past, present and future is only
a stubbornly persistent illusion. - Albert Einstein