Ekko, Shatterer of Time

Flying
{x}{g}{w}{u}, {t}: Counter X target spells and abilities. If a spell is countered this way, exile it with four time counters on it instead of putting it into the owner's graveyard. If a spell exiled this way does not have suspend, it gains suspend. This ability has split second.
If an opponent casts a spell as the result of removing a time counter, untap lands equal to that spell's mana value, and cards in you hand gain flash until that spell resolves.