Sidisi, Undead Vizier + Beacon of Tomorrows + Chainer, Nightmare Adept

Sidisi, Undead Vizier

Beacon of Tomorrows

Chainer, Nightmare Adept

How it works

1. Activate Chainer by discarding a card, allowing you to cast a creature spell from your graveyard this turn.
2. Cast Sidisi from your graveyard by paying 3.
3. When Sidisi enters the battlefield, its exploit ability and Chainer trigger.
4. Resolve the Chainer trigger, giving Sidisi haste until end of turn.
5. Resolve the Sidisi trigger, causing you to sacrifice Sidisi.
6. Sidisi's second ability triggers, causing you to search your library for Beacon of Tomorrows and put it into your hand.
7. Cast Beacon of Tomorrows by paying 6, causing you to take an extra turn after this one and shuffle Beacon of Tomorrows into your library.
8. Repeat each turn.