Junji, the Midnight Sky, Yahenni, Undying Partisan, Karmic Guide, and Massacre Girl, Most Wanted Combo

Junji, the Midnight Sky, Yahenni, Undying Partisan, Karmic Guide, and Massacre Girl, Most Wanted

Here's how the cards Junji, the Midnight Sky, Yahenni, Undying Partisan, Karmic Guide, and Massacre Girl, Most Wanted results in Infinite creature ETB, Infinite creature LTB, Infinite creature sacrifice triggers, Infinite damage, Infinite death triggers, and Infinite lifegain triggers

Junji, the Midnight Sky

Yahenni, Undying Partisan

Karmic Guide

Massacre Girl, Most Wanted

Prerequisites

Junji, the Midnight Sky on the battlefield
Yahenni, Undying Partisan on the battlefield
Karmic Guide on the battlefield
Massacre Girl, Most Wanted on the battlefield

Steps

Activate Yahenni by sacrificing Karmic Guide
When Karmic Guide dies, Massacre Girl triggers, dealing 1 damage to target opponent and causing you to gain 1 life Resolve the Yahenni ability, giving Yahenni indestructible until end of turn Activate Yahenni by sacrificing Junji
When Junji dies, it and Massacre Girl trigger
Resolve the Massacre Girl trigger, dealing 1 damage to target opponent and causing you to gain 1 life Resolve the Junji trigger, returning Karmic Guide from your graveyard to the battlefield and causing you to lose 2 life
When Karmic Guide enters, it triggers, returning Junji from your graveyard to the battlefield
Resolve the Yahenni ability, giving Yahenni indestructible until end of turn Repeat