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Update: Thanks to some feedback, I've added some new challenging modes to the bottom of this article

Is the format truly solved

Its a fine payoff/enabler for +1/+1 counter decks, but it costs about 2 mana too much to be exciting as a commander and ultimately just feels like an overcosted Kutzil, Malamet Exemplar

When Helvault is put into a graveyard from the battlefield, return all cards exiled with it to the battlefield under their owners' control

As I started going through more options, though, I realized that "essentials" here could mean things like Dockside Extortionist, Purphoros, God of Forge

It's on rate for most board wipes, so the cost isn't too bad