Rakdos Joins Up + Starfield of Nyx + Undercover Operative

Rakdos Joins Up

Starfield of Nyx

Undercover Operative

How it works

1. Cast Undercover Operative by paying its mana cost. Choose to have it enter the battlefield as a copy of Rakdos Joins Up.
2. Put Undercover Operative into your graveyard due to the legend rule.
3. Undercover Operative's first ability and second ability trigger, along with Rakdos Joins Up's second ability.
4. Resolve Undercover Operative's second trigger and Rakdos Joins Up's trigger, dealing damage to target opponent.
5. Resolve Undercover Operative's first trigger, returning it from your graveyard to the battlefield with two +1/+1 counters on it as a copy of Rakdos Joins Up.
6. Repeat from step 2.

This loop turns the legend rule into a lethal engine by using a clever copy interaction between **Rakdos Joins Up** and **Undercover Operative**. When you cast **Undercover Operative** as a copy of **Rakdos Joins Up**, the legend rule immediately forces one to the graveyard, triggering multiple enter-the-battlefield and death abilities that deal damage to your opponent while recycling the copy back to the battlefield with extra counters. Meanwhile, **Starfield of Nyx** quietly supports the engine by returning enchantments from your graveyard to the battlefield during your upkeep, ensuring you have the recursion and setup needed to keep this legendary loop firing infinitely.