Generally, you are focusing more on the lifegain, as the mill cards are rarer
Once you have a direction or two you have to pick exclusively cards that work with them
Choose a Background (You can have a Background as a second commander.) Choose a Background (You can have a Background as a second commander.) Legendary Creature - Cleric Elf Volo, Itinerant Scholar When Volo enters, create Volo's Journal, a legendary colorless Book artifact token with hexproof and "Whenever you cast a creature spell, note one of its creature types that hasn't been noted for Volo's Journal." , : Draw a card for each creature type noted for target permanent you control named Volo's Journal
Legendary Creature - Human Samurai Color tag templates(None) Hellkite Tyrant Flying, trample Whenever this creature deals combat damage to a player, gain control of all artifacts that player controls
This makes it incredibly powerful, despite it being susceptible to disenchant effects