Luckily, the Commander decks are designed to avoid this
Not only are new cards constantly added into the mix, but old cards can resurface when specific strategies or decks rise to the top of any of the many formats that are available to players in this rich TCG
Of the three option, Shu Yun requires the fewest cards and least amount of setup required to kill someone
Back for More Yes, its expensive, but Back for More gives you an instant-speed reanimation effect added to a fight effect
That is, until you take into account the cards first ability - The Power of Evil, which allows the player to play Chernabog, Evildoer for one less ink per character card they have in their discard
By adding more specific hoops a deck-builder has to jump through to cast or get value from a bomb, designers are then free to raise the power level on that creature significantly, knowing it wont become part of an ultra-consistent goodstuff shell