Its squarely in Bracket 3, and it functions as a token/big-mana deck
Dimir Murktide doesnt come out of the gate quite so fast, but it has so much removal and disruption that Esper Energy will likely struggle to find its footing
Their unique condition grading is easy to understand, and their point system lets you grow your collection smarter the more you shop
In most cases it is better to continue playing to call their bluff because, if your opponent doesnt have a way to destroy Roots of Yggdrasil you can at least progress the game
If you want to play poison now you'll pay a premium, otherwise you can wait a few months and save a few bucks as you put together your deck
Its ability to mega evolve in later games such as Pokmon X and Y, where it becomes a Water/Dark type, only adds to its allure and strategic depth