Voltron commanders are frequently outfitted defensive apparel (Swiftfoot Boots, Robe of Stars, Champion's Helm) to keep safe from removal, but we also include Instant-speed (Sejiri Shelter // Sejiri Glacier, Slip Out the Back, Shelter) and creature-based (Koll, the Forgemaster, Selfless Samurai) backups for added insurance
Before each game, choose three of them at random
Having a consistent way to not only create a second combat phase but also untap all the creatures you control for a measly four mana is a phenomenal pairing, especially when used as a Commander to bring her back into the fight after being targetted
Thats easier to manage than nontokens, and it lets you play with all the Treasure and Powerstone tokens youd like
Impervious Greatwurm I talked about this card at length in a previous article where I looked at some cards that had inspired me, and I had multiple brews and ideas around this card