This combination of both print treatment and varied artwork will best maximize the visual effect to allow for your cards to pop, both on the battlefield and in a curated binder
Azorius and Jund: Ezrim, Agency Chief and The Fugitive Doctor & Clara Oswald Dimir and Naya: Eloise, Nephalia Sleuth and Elmar, Ulvenwald Informant & Sophina, Spearsage Deserter Gruul and Esper: Jaheira, Friend of the Forest & Street Urchin and Inquisitor Greyfax Selesnya and Grixis: Cadira, Caller of the Small and The Rani Izzet and Abzan: Glacian, Powerstone Engineer & Dargo, the Shipwrecker and Wernog, Riders Chaplain & Othelm, Sigardian Outcast Golgari and Jeskai: Ich-Tekik, Salvage Splicer & Keskit, the Flesh Sculptor and The Fifteenth Doctor & Sarah Jane Smith thats a lot of partner pairs
An Angel tribal deck should run between 20 and 30 Angels depending on the commander
Ive heard some call it the green Shelly (Sheoldred, the Apocalypse) for formats like Standard and Modern and its not a perfect analog since Ouroboroid cant just solo people like Shelly can, and is worse against bolts but it does highlight something: letting this live for a turn or two can make life rough, even on its own