Clockspinning with buyback by paying ({3} magic symbol) ({U} magic symbol) , targeting
Harmonic Prodigy.
Orvar triggers twice and
Harmonic Prodigy triggers once.
Resolve the
Harmonic Prodigy trigger, giving it +1/+1 until end of turn.
Resolve the
Orvar triggers, creating two token copies of
Harmonic Prodigy.
Resolve
Clockspinning, returning it to your hand.
Cast
Clockspinning with buyback by paying ({3} magic symbol) ({U} magic symbol) , targeting
Harmonic Prodigy.
Orvar triggers four times, and each Harmoic Prodigy triggers three times.
Resolve all
Harmonic Prodigy triggers, giving each
Harmonic Prodigy +3/+3 until end of turn.
Resolve all
Orvar triggers, creating four token copies of
Harmonic Prodigy.
Resolve
Clockspinning, returning it to your hand.
Cast
Clockspinning with buyback by paying ({3} magic symbol) ({U} magic symbol) , targeting any nonlegendary permanent you control that enters the battlefield untapped and that can tap to produce at least ({U} magic symbol) .
Orvar triggers eight times, and each
Harmonic Prodigy triggers seven times.
Resolve all
Harmonic Prodigy triggers, giving each
Harmonic Prodigy +7/+7 until end of turn.
Resolve all
Orvar triggers, creating eight copies of the mana-producing permanent.
Resolve
Clockspinning, returning it to your hand.
Activate four of the copies of the mana-producing permanent by tapping them, adding at least ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Repeat from step 11.
Results
Infinite creature tokens.
Infinite ETB.
Infinite landfall triggers.
Infinite magecraft triggers.
Infinite mana permanents you control can produce.
Infinite storm count.
Infinite copies of permanents you control.
Infinitely large creatures you control until end of turn.