Behind Comet, we get a good view of Myra the Magnificent's Intergalactic Astrotorium of Fun, the space amusement park where Unfinity takes place
Set this up preemptively for an impactful attack, or maybe as an edge case to to save an important creature from damage
If I did have to pick a recent set to compare it to, Id probably say Lost Caverns of Ixalan , with the tendency for aggro decks to pivot towards indirect damage in the lategame, and the powerful lategame in various colors and flavors
Supplemented by Mister Fantastic, Reed Richards and your Clue generators like The Mechanist, Aerial Artisan, you can draw a surprising number of cards once your engine is online
And sorry
If multiple Totem Armors are on a creature that would be destroyed, only one aura goes away, the rest stay, and you get to choose which