I'm surprised that you didn't include Darksteel Forge, other than the high casting cost.

SideshowBlob its a good card. I did consider it but i came to the conclusion that all of my creatures, 2 equipments, and 4 lands are already indestructible and worldslayer doesnt destroy itself. Whichever creature triggers world slayer is going to be able to do it again on my next turn making Darksteel forge more of a win more rather than a game changer.

This is really cool! I have an indestructible-themed Modern deck too! I use white in mine though which gives me access to Pariah, Dispatch, and sweepers like Fumigate. Have you considered adding White in yours?

Peoyogon adding another color would compromise the deck as its built right now. Both those cards are good, they just don't fit this build in my opinion. If I could I would build this deck 100% colorless but I cant find anything colorless similar to Ancient Stirrings.