Data does not lie. Time to scoop these up in their infancy in Modern decks. Single printing. Go with foils under $5.00, non-foils under $1.50. Look out for a reprint in Modern Masters 2017, unload before that time if it does bloom. I predict that foils will be $20 within 2 years, non-foils will be $3.00+ within 1 year (without a reprint).
Tribes are not only a major feature of Magic, they also see continuous reprinting that energizes the enablers of each. There are plenty of great green tribes, this has extremely wide appeal in Constructed tribal decks. Each time a green tribe resurges, Descendants' Path will ratchet upwards.