the original Neo Genesis version was incredibly strong since it needed only two energy to deal an average of 90 damage in a time when 150 HP was a lot, but the Celestial Storm version which is a very slightly nerfed version of the Neo Genesis one didn't make nearly as much of a splash, since 90 damage was to be expected of a heavy hitter that didn't rely on RNG, and was only really good for evolving into stronger cards
Two mana 2/2s aren't great these days, and this Valiant trigger is nothing special
Teenage Mutant Ninja Turtles pre-release events are happening this week, so fans can head to the official WoTC website to check for any events near them.
You can't turn this into a creature without tapping two tokens, so this isn't worth running in many decks in the format, but it looks good in Green/White and maybe Black/Green
But what if we could be a bit more creative
If an effect allows you to spend mana "as though it were mana" of any color or type, that allows you to spend mana you couldn't otherwise spend, but it doesn't change what mana you spent to cast the spell