Requires

Mystic Retrieval in your graveyard. Call to Mind in hand. Chandra on the battlefield. Time Warp in hand. You have not cast an instant or sorcery this turn. available on each odd-numbered turn, with at most available each even-numbered turn.

Steps

1. Cast Time Warp by paying , targeting yourself
2. Chandra triggers, copying Time Warp, targeting yourself
3. Resolve both Time Warps, causing you to take two extra turns after this one
4. Move to your next turn
5. Cast etiher Mystic Retrieval or Call to Mind by paying its mana cost, targeting either Call to Mind or Mystic Retrieval in your graveyard
6. Chandra triggers, copying Call to Mind or Mystic Retrieval, targeting Time Warp
7. Resolve both Call to Minds or Mystic Retrievals, returning Time Warp and either Call to Mind or Mystic Retrieval from your graveyard to your hand
8. Move to your next turn
9. Repeat

Results