Arcane Bombardment + Inspiring Refrain + Jhoira's Timebug + Time Walk + Walk the Aeons

Arcane Bombardment

Inspiring Refrain

Jhoira's Timebug

Time Walk

Walk the Aeons

How it works

1. Cast Inspiring Refrain by paying 4.
2. Arcane Bombardment triggers, exiling a random instant or sorcery from your graveyard, and then casting a copy of Time Walk and Walk the Aeons without paying their mana costs.
3. Resolve the Time Walk 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.

This magnificent temporal engine relies on Arcane Bombardment to repeatedly cast a chain of extra turn spells for free every time you trigger it. The loop is fueled by Inspiring Refrain, which continuously draws you into your resources while setting itself up to be cast again from exile, a process accelerated by Jhoira's Timebug shaving off its time counters early. By using Time Walk and Walk the Aeons to secure an endless succession of extra turns, you lock your opponents out of the game entirely while effortlessly chaining through your deck.