It felt right
Imperial Mask Imperial Mask is mainly playable in Archenemy and Two-Headed Giant Commander formats since the card not only gives you hexproof, but also your other teammate(s)
Often, by the time our opponent can play a non-targeted board wipe, we've gotten our big stuff out and it's not as much of an issue
You won't see much milling going on in white MTG decks, but black, green, and occasionally red see a mill card or two
It pumps out massive amounts of damage through the combination of 33 different creature spells or squirrel-token spells, combined with 14 different anthem effects (including chitterspitter, which given enough time can make your team enormously strong on its own)
I tossed in the obvious two Witnesses, the two modal spell lands, and even more Crucible of Worlds like Glacierwood Siege and more