Arcane Bombardment, Time Warp, and Mystic Speculation

Prerequisites

• Arcane Bombardment on the battlefield
• Time Warp in exile
• Mystic Speculation in hand
• each turn available

Steps

1. Cast Mystic Speculation with buyback by paying
2. Arcane Bombardment triggers, exiling an instant or sorcery at random from your graveyard, and casting a copy of Time Warp without paying its mana cost
3. Resolve Time Warp, causing you to take an extra turn after this one
4. Resolve Mystic Speculation, causing you to scry 3 and return Mystic Speculation to your hand
5. Repeat each turn

Results

• Infinite turns