Mishra, Eminent One + Urza, Lord High Artificer + Worldwalker Helm + Frostcliff Siege

Mishra, Eminent One

Urza, Lord High Artificer

Worldwalker Helm

Frostcliff Siege

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 elegant engine relies on Mishra, Eminent One to turn Worldwalker Helm into a 4/4 combat-ready Mishra's Warform while simultaneously generating a Map token. Urza, Lord High Artificer acts as the mana engine, tapping those very Map tokens for blue mana to fund Worldwalker Helm's copy ability, which in turn multiplies your Warforms and triggers Frostcliff Siege's color-choice synergies for card draw and combat buffs. By continuously copying the animated Helm and leveraging Urza's tap ability, you generate an unstoppable loop of artifact and creature tokens that ultimately lets you exile and cast your entire library.