Echocasting Symposium, Returned Pastcaller, and Temporal Manipulation

Prerequisites

• Echocasting Symposium in exile
• Returned Pastcaller on the battlefield
• Temporal Manipulation in hand
• each turn available

Steps

1. Cast Temporal Manipulation by paying its mana cost, causing you to take an extra turn after this one
2. Move to your next turn
3. At the beginning of your precombat main phase, Echocasting Symposium's paradigm ability triggers, causing you to cast a copy of it from exile
4. Resolve the copy, creating a token copy of Returned Pastcaller When the Returned Pastcaller token enters, it triggers, returning Temporal Manipulation from your graveyard to your hand
5. Repeat

Results

• Infinite turns
• Lock