Altanak, the Thrice-Called + Sentinel + Lure + Switcheroo

Prerequisites

• An opponent controls a creature.
• Sentinel does not have summoning sickness.
• Lure attached to Sentinel.

Steps

1. 1Cast Switcheroo by paying , exchanging control of Altanak and another creature with an opponent.
2. 2Declare Sentinel as an attacker, forcing Altanak to block it due to Lure.
3. 3Holding priority, activate Sentinel an arbitrarily large number of times by paying , targeting Altanak.
4. 4Altanak triggers that many times, causing an opponent to draw that many cards and lose the game due to drawing from an empty library.

Effects

• Infinite card draw for target opponent
• Infinite draw triggers for target opponent
• Target opponent loses the game