winteriscomingg and pitan77, as explained in the description, Narset's Reversal with Time Spiral works as a substitute for twister. Any time you want to do a twister loop, you already have infinite mana so it works fine.

Shaper I have been looking into fierce guardianship, I have a deck built from this list what should I cut for it?

tap2izzet ShaperSavant Hey this may be a silly question, but I can't find anything conclusive on the internet. Can someone explain to me the Narset's Reversal + Time Spiral loop like I'm 5?

swannn to answer your question about the Timespiral + Narset's Reversal loop: if you have in play Scepter (Dramatic Reversal imprinted) and Copy Artifact Scepter (Narset's Reversal imprinted) you can make infinite mana with the Scepter with Dramatic Reversal imprinted and copy Timespiral with the Scepter with Narset's Reversal keeping the actual Timespiral in your deck which will give you infinite spell casts with Urza activations until you find your win con.

For anyone considering Fierce Guardianship, my hot take is to cut Negate for it. Parity on your counter spell value (both noncreature effects), and while it costs 1cmc higher if hard cast, negate hardly an ideal piece of super early game interaction.

Maybe I’m missing something but what is the win conditions. I see you can mill with codex shedder and make your artifacts creature for a turn but that’s all I’m seeing. I saw you make mention of the Future Sight + Sai + Urza + Sensei's Divining Top Loop but where is Sai in the deck. Also when you said you can use Engine as an outlet but what is engine. Sorry these may be dumb questions.

Have you considered putting Thassa's Oracle in, since we have easy ways to draw our deck out?

Uerzcp The real win condition with the deck is to land Isochron Scepter and imprint Dramatic Reversal on it. With Urza and enough artifacts to generate 3 colorless mana Isochron-Reversal creates an infinite mana loop with the upside of unwrapping all of your non-land cards. With the infinite mana you can use Urza's ability to dig through your deck until you hit an out like Codex Shredder. In this case Isochron-Reversal will give you unlimited untaps to use Shredder to mill out all your opponents.

What would you replace Astrolabe with? Trinisphere? I refuse to play Astrolabe because playing snow basics means I play with inferior art.

Hey, I was just wondering if there are any changes coming along from the last few sets

This needs the changeling updated, I understand the changes but alot of people aren't seeing them.

For UPS updates go to, https://www.moxfield.com/decks/kes83-onUU6X_H-RyM8HPw