Mishra, Eminent One + Urza, Lord High Artificer + Worldwalker Helm + Cyclops of Eternal Fury

Mishra, Eminent One

Urza, Lord High Artificer

Worldwalker Helm

Cyclops of Eternal Fury

How it works

1. At the beginning of your combat phase, Mishra triggers, creating a token copy of Worldwalker Helm that is a 4/4 Construct artifact creature with haste named Mishra's Warform, and a Map token.
2. Activate Urza's first ability by tapping a Map, adding .
3. Activate Mishra's Warform by paying 1 and tapping it, creating a token copy of it and a Map token for each Mishra's Warform and/or Worldwalker Helm you control.
4. Activate Urza's first ability twice by tapping two Maps, adding .
5. Repeat from step 3.

This loop takes off right at the beginning of combat when Mishra, Eminent One targets Worldwalker Helm, turning it into a hasty Mishra's Warform while also generating a bonus Map token. From there, Worldwalker Helm's activated ability is used to copy that Warform, which triggers Worldwalker Helm's replacement effect to flood the board with even more Map tokens and artifact copies. Urza, Lord High Artificer acts as the engine's powerhouse by turning all those newly minted artifacts into a cascade of blue mana, which feeds the copy loop and eventually fuels Urza's five-mana ability to cast your entire library. Meanwhile, Cyclops of Eternal Fury quietly ensures your massive army of token copies keeps the gift of haste without missing a beat.