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
Generally, variance is key to things being fun, so it would lessen the number of drafts they'd want to do
As is standard for present-day precon decks, this one is a fairly complete decklist on its own terms
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
This gives you not only card advantage, but a massive field-wide boost to your attacks