Earthbending allows players to turn any land they control into a creature with haste and a number of +1/+1 counters on it
There is a good reason why Izzet is so popular in Standard play and why this Prismari deck takes those same principles and stretches them into a 100-card singleton deck that's a ton of fun to play with but frustrating as hell to play against.
For that reason, youll likely want to build this as a Mardu Midrange deck
Add to that the fact that you have to make it to your next upkeep once you've fulfilled the condition, and it's pretty clear this card is bait
From a Judge group on Facebook From gatherer for Zaxara, the Exemplary: If an effect, such as that of Parallel Lives, causes Zaxaras ability to create multiple Hydra tokens, they each receive X +1/+1 counters
There are more commanders that work in this space these days, but the Bant colors serve the walls archetype well