who designs yugioh cards Card Design Guide - Realistic what are the most rare

Or is this a bigger format where it will birth a Volcanic Island

What is that

Kirri, Talented Sprout is super-cute and is obviously the first card in the 99 of your Yuma deck, but as a stand-alone commander, a lot will depend on how cohesive you can make a Plant and Treefolk duo-typal deck

Theres not an exact moment when you can use its VSTAR Ability, but its usual usage is when you want to give the coup de grce to your rival and claim your last Prize Cards or to suit a Kyurem VMAX as soon as possible

Toxicrene Toxicrene is a clever method of shutting off some of the formats best lands, like Cabal Coffers, Maze of Ith, and Nykthos, Shrine to Nyx

You can use this just to have some meat to sacrifice to a cool sacrifice trigger you want to use