Urza, Lord High Artificer + Deadeye Navigator + Exalted Sunborn

Urza, Lord High Artificer

Deadeye Navigator

Exalted Sunborn

How it works

1. Activate Urza by paying 1, blinking it.
2. When Urza enters the battlefield, it and Deadeye Navigator's soulbond ability trigger.
3. Resolve the Deadeye Navigator trigger, repairing it and Urza.
4. Resolve the Urza trigger, creating two 0/0 Construct artifact creature tokens.
5. Activate Urza's first ability twice by tapping the Constructs, adding .
6. Repeat.

This clever loop turns Urza, Lord High Artificer into an endless factory for Construct tokens by utilizing Deadeye Navigator's soulbond ability to repeatedly blink Urza and trigger his entry ability. The entire engine is supercharged by Exalted Sunborn, whose replacement effect doubles the number of Construct tokens created with each iteration. Once you have those tokens, you can tap them using Urza's mana ability to generate the blue mana required to pay Deadeye Navigator's blink cost, keeping the sequence going indefinitely.