Kalonian Hydra is a Hydra but doesnt have X in its casting cost, so it wont directly benefit from Zaxaras triggered ability, but once it starts to attack all of your Hydras and other creatures with +1/+1 counters get to double those counters for more face-smashing
This will likely be a major mechanic of the set that will make giving your opponent that third counter a very big deal, also meaning that your other Toxic cards will be working together to help you achieve this goal
What this means is that we consciously put in cards that took on an extra meaning when you started mixing and matching the various guilds
The deck also has a couple of 'standard' packages built in
And the next onetentatively scheduled for 11/10/25is going to get into the abundant good green cards, including (finally) several earthbending cards
A single attack destroys everything, including lands, but Anara ensures that your commanders survive