Thank you!
I thought about Mystic Snake, but I didn't see one while going through my cards unfortunately. It's one I'll consider getting if I decide I really need to buy cards for the deck.
Embodiment of Spring has a similar effect to Sakura-Tribe Elder and Dawntreader Elk, and I'm running that also. Elder probably does do better in one or both of their spots, but in most cases it won't matter as much.
Fertilid will like get a space first, for being able to ramp more than once.
Khalni Garden will make it in once I remember where I put all of the ones I have.
And I'm actually not itching for more card draw in this deck currently. The ones I have right now have done quite well. Yeah, I could probably do with one more or so, and in that case I'll probably pick Sage of Fables over Zameck and Automaton, if only because its activation is colorless and I can take a counter off of any creature I control (also, Automaton's ability is two counters per card versus one counter per card). I actually passed over Sage of Fables multiple times while building the deck and getting out cards for the next
switcheroo.
I didn't get to test this deck out in a real game yet, unfortunately. Once I do, I'll post something about it here.