Set 2, Rise of the Floodborn, made it plain that the meta wasn't going to stay static for very long
The old combo, which never saw any real competitive play, required a hefty four cards to do anything meaningful, as well as an exerted character on your opponents side of the board
Besides Nissa, Natures Rhythm plays an important role here as well when it comes to finding your combo pieces in a more consistent manner
Utilize mechanics that reward you for boosting your creatures strength, mirroring the iconic Limit Break system from the game
Ravensburger just needs to be careful in threading the needle, as its also off-putting
If your pods heading too far down the battlecruiser route, you should consider picking this up to remind them that Magic can be a very fast game