The face you didn't choose would be treated as nonexistent for as long as Werewhat remains on the battlefield
My first cut suggestions would be Gloom Sower, Avatar of Woe, Inkwell Leviathan, and lastly Maha, Its Feathers Night
Slowly teased over the course of the Mirrodin block, with the Sword and Shield of Kaldra appearing in Mirrodin and Darksteel, respectively, the final reveal of Kaldra that came with the Helm was exciting indeed
Even though those cards lose some their luster in Commander, that format has enough big equipment like Worldslayer and Argentum Armor to be worth its inclusion
Since this is such an easy way to win, I included all of the best tutors to make it consistent as well
Presumably, well get the remaining five in the next multiplayer-focused set