Many of the most powerful commanders are those who are capable of accruing a great deal of value with little to no effort on the end of their respective controller
Wilhelt also allows you to sacrifice a Zombie during your end step to draw a card
I mean Me, the Immortal retains all counters, not just those granted by the first ability
With flashback in mind, I had to try utilizing Call of the Herd, which had been discussed on the Premodern blog not too long ago
Honorable Mention I'm not ready to rank a card that doesn't even include Leyline in its name, but Quicksilver, Brash Blur is a potential permanent you can open the game with before any other cards are played
4 - The Soul Stone Look, The Soul Stone might be the priciest card in the set when all is said and done, but its a very fun card to play with