Ring of Spell Storing

Whenever you cast an instant or sorcery spell,
you may counter that spell. If you do, exile it
instead of putting it into its owner's graveyard.
{t}: Cast an instant spell exiled with Ring of Spell Storing without paying its mana cost.
{t}: Cast a sorcery spell exiled with Ring of Spell Storing without paying its mana cost. Activate
this ability only any time you could cast a sorcery.