Mishra, Eminent One + Urza, Lord High Artificer + Worldwalker Helm + Samut, Tyrant Smasher

Mishra, Eminent One

Urza, Lord High Artificer

Worldwalker Helm

Samut, Tyrant Smasher

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 clever artifact loop hinges on Mishra, Eminent One turning Worldwalker Helm into a 4/4 combat creature whose copies can immediately tap to fuel Worldwalker Helm’s own token-duplication ability. Because Worldwalker Helm’s replacement effect turns any artifact token creation into a cascading swarm, every iteration multiplies your board presence while Urza, Lord High Artificer taps the newly spawned Map tokens for infinite blue mana. With Samut, Tyrant Smasher ensuring your proliferating army is always ready for action, Urza's expensive mana sink can eventually be activated infinitely to play your entire library for free.