This gives you not only card advantage, but a massive field-wide boost to your attacks
If you could reliably cast this off of a Mountain, a Forest, and a Swamp, that would be great, but that's not an option
I have so many questions
The difference between these two card types has many implications: Moonmist Is Magics Only Mass Transform Spell This is much more niche, but the card Moonmist from Innistrad is pretty much the only generalist forced-transform spell in Magic, and even thats restricted to only transforming humans
Image Source: Official Trainer Website of Pokemon Card Game Japan Pokemon Card Game Japan has revealed a full card list from their upcoming high-class set SV4a 'Shiny Treasure ex'
Generally, variance is key to things being fun, so it would lessen the number of drafts they'd want to do