Cast Apex of Power by paying at most ({4} magic symbol) ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) .
If you have fewer than ten experience counters, Mizzix of the Izmagnus triggers, causing you to get an experience counter.
Resolve Apex of Power, exiling the top seven cards of your library with the ability to cast them until end of turn, and adding either ten ({U} magic symbol) or ten ({R} magic symbol) .
Cast Mystic Retrieval by paying ({U} magic symbol) , returning Apex of Power from your graveyard to your hand.
Cast Mystic Retrieval from your graveyard for its flashback cost by paying ({R} magic symbol) , returning Runic Repetition from your graveyard to your hand and exiling Mystic Retrieval.
Cast Runic Repetition by paying ({U} magic symbol) , returning Mystic Retrieval from exile to your hand.
Repeat.
Results
Cast all cards in your library.
Infinite colored mana.
Infinite magecraft triggers.
Infinite mana permanents you control can produce.
Infinite storm count.
Infinite untap of permanents you control.
Instant/Sorcery with "Return Instant/Sorcery from GY to hand".