Three mana for a 3/3 and 3 life the vast majority of the time is just great
Anti-banishing floodgates such as "Imperial Iron Wall" renders the shared "Bystial" monster effect useless
Its this union of competitive power and striking style that cements this beautiful piece of cardboard as the sets most coveted prize
While other cards that discard your cards give you some immediate benefit on its own like summoning creatures, drawing cards, or also force your opponent to discard cards as well, One With Nothing has no direct benefit by itself and you need other cards to make use of it
With all of that being said, you could certainly build more heavily into Reshiram ex than this deck does, depending on what you are going for
For Keruga, the Macrosage, that constraint is not including any one- or two-cost cards in your deck