Aether Meltdown

If the target creature or Vehicle becomes an illegal target while Aether Meltdown is on the stack, Aether Meltdown won't resolve. It won't enter the battlefield and you won't get {E}{E}.

Keep track of how many energy counters each player has. Potential ways to track this include writing theme down on paper or using dice, but any method that is clear and mutually agreeable is fine. (At higher levels of tournament play, dice may not be allowed for tracking counters that players have.)

If an effect says you get one or more {E}, you get that many energy counters. To pay one or more {E}, you lose that many energy counters. You can't pay more energy counters than you have. Any effects that interact with counters a player gets, has, or loses can interact with energy counters.