Triskaidekaphile + Peer into the Abyss + Aeromoeba + Warrior's Oath

Triskaidekaphile

Peer into the Abyss

Aeromoeba

Warrior's Oath

How it works

1. Cast Peer into the Abyss, drawing at least twelve cards and losing half your life total.
2. Cast Warrior's Oath, gaining an extra turn.
3. Activate Aeromeba by discarding a card to switch Aeromeba's power and toughness until end of turn.
4. Repeat step 3 until you have exactly thirteen cards in your hand.
5. Pass to the extra turn.
6. At the beginning of your upkeep, Triskaidekaphile triggers, winning the game.