Colors that touch are considered allies (like red and green), while those that dont are enemies (like red and blue)
Its a big ask though, spending six mana, especially as the Apex Observatory enters tapped, preventing you from getting value from it until the next turn
6 Archivist of Oghma In a format full of tutors and fetch lands, Archivist of Oghmas potential is absurd
This definitely has some synergy with damage modifiers such as Fiery Emancipation and Torbran, Thane of Red Fell, but I cant help but feel like the most diabolic use for this card would be alongside Korvold, Fae-Cursed King and Squandered Resources or Rain of Filth
Otherwise, they may put it onto the battlefield face down as a 4/4 red Present creature
If you are lucky enough to open a textured foil, you just pulled one of the most valuable cards, and even the base version has a decent price if you don't get the fancy art treatment in your pack