The Willing half also costs three and gives your team deathtouch and lifelink
Unfortunately it can only get a basic Plains to hand
Pokmon Arceus V and its Trinity Charge attack work to power up any Pokmon V (including Pokmon VSTAR, Pokmon V-UNION, or Pokmon VMAX) you have in playwhether thats another Arceus V or VSTAR, or some alternate attacker, Trinity Charge ensures that your deck will have the Energy attachments it needs to keep its strategy flowing
Legality depends on the tournament format -- Lava Spike can be legal in some formats and banned or restricted in others
it just feels like "stuff that exist in this place" instead of it really selling any kind of vibe or story the way Fallen Empires did, or even Ice Age with its recurring theme of societies adapting to the titular ice age
Thanks for playing Commander, reading through this, and for being a part of the community