Alaundo the Seer and Chakram Retriever on the battlefield.
All other permanents in exile.
Inspiring Refrain in exile with three time counters on it.
Venture Forth in exile with two time counters on it.
Reality Strobe in exile with one time counter on it.Alaundo the Seer does not have summoning sickness.
It is your turn.
Steps
Activate Alaundo the Seer by tapping it, causing you to draw a card and exile a card from your hand with time counters on it equal to its mana value, then removing a time counter from each other card you own in exile.
Reality Strobe triggers, causing you to cast it from exile without paying its mana cost.
Chakram Retriever triggers, untapping Alaundo the Seer.
Resolve Reality Strobe, returning a permanent to its owner's hand, then exiling Reality Strobe with three time counters on it.
Activate Alaundo the Seer by tapping it, causing you to draw a card and exile a card from your hand with time counters on it equal to its mana value, then removing a time counter from each other card you own in exile.
Venture Forth triggers, causing you to cast it from exile without paying its mana cost.
Chakram Retriever triggers, untapping Alaundo the Seer.
Resolve Venture Forth, causing you to exile cards from the top of your library until you exile a land card, then putting the land card onto the battlefield and the rest of the cards exiled this way on the bottom of your library, and then exiling Venture Forth with three time counters on it.
Activate Alaundo the Seer by tapping it, causing you to draw a card and exile a card from your hand with time counters on it equal to its mana value, then removing a time counter from each card you own in exile.
Inspiring Refrain triggers, causing you to cast it from exile without paying its mana cost.
Chakram Retriever triggers, untapping Alaundo the Seer.
Resolve Inspiring Refrain, causing you to draw two cards and then exiling Inspiring Refrain with three time counters on it.
Repeat.
Results
Cast a portion of the cards in your library and hand without paying their mana costs.
Near-infinite card draw.
Near-infinite draw triggers.
Near-infinite magecraft triggers.
Near-infinite storm count.
Return most permanents you don't control to their owner's hand.