Many of the best Partner Commanders MTG succeed because their abilities naturally support these principles, allowing the deck to scale effectively across different power levels
White can manipulate +1/+1 counters almost as well as black handles sacrifice synergies, so you can build a beast of a deck with this Orzhov commander, if a slow one
Three colour lands that cycle and have basic lands types (which means theyre fetchable) are a slam dunk auto-include in any 3+ colour EDH decks thats not just running all original duals with shocks and fetches to boot (which isnt many decks, really)
Blood Artist Look, its more life play
There also seems to be some consistent limitations to the cards it appears on: either you dont have full control over when you can trigger proliferate, or the way you trigger it leaves you behind on board relative to the mana spent
This reflects character creation in Fifth Edition, in which players mix and match a character's mechanical build with various backgrounds