Are you ready for the Fifth Dawn?

[DinoDoc]

Originally posted by Mr. President
Maybe Urza will come back too, then! (Although it might be hard because he has no head and got blown up by the Legacy Weapon.)

Urza and Gerrard are part of Karn.

[Mr. President]

So if Karn were to be destroyed or dismantled or devolved, would it be possible to recover Urza and Gerrard?

[DinoDoc]

Possibly but it would take a lot of effort to destroy a planeswalker.

[Mr. President]

I guess that depends on how you do it and what they're doing at the time.

For example, in the Apocalypse novel, Commodore Guff falls easily to Yawgmoth's malevolent smoke because he's distracted.

And before that, Urza incapacitates Tevesh Szat with electricity or some such.