Phantom Steed + Revolutionist + Time Warp Combo

Phantom Steed on the battlefield.

Revolutionist in exile.

Time Warp in hand.

Revolutionist is exiled by Phantom Steed.

An opponent cannot block and kill Phantom Steed.

each turn available

Cast Time Warp by paying its mana cost, causing you to take an extra turn after this one

Declare Phantom Steed as an attacker. It triggers, creating a token copy of Revolutionist that's tapped and attacking.

When the Revolutionist token enters, it triggers, returning Time Warp from your graveyard to your hand.

Repeat each turn

Infinite turns

Lock