Phantom Steed + Time Stretch + Scholar of the Ages

Phantom Steed

Time Stretch

Scholar of the Ages

How it works

1. Cast Time Stretch, taking an extra two turns after this one.
2. Attack with Phantom Steed.
3. Phantom Steed triggers, creating a token copy of Scholar of the Ages that is tapped and attacking.
4. Scholar of the Ages enters, returning Time Stretch from your graveyard to your hand.
5. Pass the turn.
6. Repeat.