Azioc, Wizard's Champion

Lifelink, Hexproof
Riot X - X equals the number of experience counters you have.
Eminence - Whenever an instant or sorcery is cast
that targets a spell, permanent, or player other than you, you gain an experience counter.
Azioc, Wizard's Champion cost {1} less for each experience counter you have.
Instants and sorceries cost {1} less for each each experience counter you have.