From there, you can go: Orzhov (WB) : Teysa Karlov, Elenda, the Dusk Rose, tokens Rakdos (BR) : Judith, the Scourge Diva, Mayhem Devil, treasure synergies Golgari (BG) : Mazirek, Kraul Death Priest, Savra, Queen of the Golgari, graveyard recursion Mardu (WBR) : Alesha, Who Smiles at Death, Queen Marchesa, more aggressive builds Abzan (WBG) : Tayam, Luminous Enigma, Ghave, Guru of Spores, counter synergies The archetype scales well at any power level
Anything fewer and you will constantly feel like you are behind the curve
Orfeo, the Boulder Mr
There are lots of great examples, but one that particularly stuck with me was Academy Ruins by Zoltan Boros and Gabor Szikszai
Target creature you control fights target creature an opponent controls