Requires

Arcane Bombardment must be on the battlefield. Inspiring Refrain must be in hand. Jhoira's Timebug must be in hand, or on the battlefield. Time Warp must be in exile. Walk the Aeons must be in exile. You have not cast an instant or sorcery spell this turn. Time Warp and Walk the Aeons exiled by Arcane Bombardment. Mana needed:

Steps

1. Cast Inspiring Refrain by paying .
2. Arcane Bombardment triggers, exiling a random instant or sorcery from your graveyard, and then casting a copy of Time Warp and Walk the Aeons without paying their mana costs.
3. Resolve the Time Warp and Walk the Aeons copies, causing you to take two extra turns after this one.
4. Resolve Inspiring Refrain, causing you to draw two cards and exile Inspiring Refrain with three time counters on it.
5. Activate Jhoira's Timebug by tapping it, removing a time counter from Inspiring Refrain.
6. Move to your first extra turn, removing a time counter from Inspiring Refrain during your upkeep.
7. Move to your second extra turn, removing a time counter from Inspiring Refrain during your upkeep.
8. Inspiring Refrain triggers, causing you to cast it from exile without paying its mana cost.
9. Repeat from step 2.

Results