Sidisi, Undead Vizier, Beacon of Tomorrows, and Karador, Ghost Chieftain

Prerequisites

• Sidisi, Undead Vizier in the graveyard
• Beacon of Tomorrows in the library
• Karador, Ghost Chieftain on the battlefield
• You have not cast a creature spell using Karador this turn
• each turn available

Steps

1. Cast Sidisi from your graveyard by paying
2. When Sidisi enters the battlefield, its exploit ability triggers, causing you to sacrifice Sidisi
3. Sidisi's second ability triggers, causing you to search your library for Beacon of Tomorrows and put it into your hand
4. Cast Beacon of Tomorrows by paying , causing you to take an extra turn after this one and shuffle Beacon of Tomorrows into your library
5. Repeat each turn

Results

• Infinite turns