Urza, Lord High Artificer + Corridor Monitor + Banishing Knack + Shuri, Wakandan Inventor

Urza, Lord High Artificer

Corridor Monitor

Banishing Knack

Shuri, Wakandan Inventor

How it works

1. Cast Banishing Knack by paying , targeting a creature you control that doesn't have summoning sickness.
2. Cast Corridor Monitor by paying due to Shuri.
3. When Corridor Monitor enters, it triggers, untapping the creature targeted by Banishing Knack.
4. Activate Urza's first ability by tapping Corridor Monitor, adding .
5. Activate the creature targeted by Banishing Knack by tapping it, returning Corridor Monitor from the battlefield to your hand.
6. Repeat from step 2.

This ingenious loop turns a simple bounce trick into an unstoppable engine, fueled entirely by the mana-generating prowess of Urza, Lord High Artificer tapping your artifacts. By casting Corridor Monitor for a reduced cost thanks to Shuri, Wakandan Inventor, you trigger an entry effect that untaps the creature you've granted a bounce ability to using Banishing Knack. Once the Corridor Monitor resolves, Urza taps it for blue mana, allowing that same creature to tap and return the Corridor Monitor back to your hand so the whole cycle can begin anew.