Dont think this means she missed the boat though this is exactly the type of card that people forget about until it wins a GP and suddenly jumps in price
Submerge came close for this spot, as its often a free spell
One of only 10 known examples with this error, the other nine are four Nidoran cards, two Tangela cards, two Weedle cards and one Arcanine card
In Commander, I think Oko might win in a landslide, since the high loyalty decreases the vulnerability to being attacked by multiple opponents, and the trade ability is more likely to find a high-value target
While this may not be as strong as East Tree, its still a huge step up from the 3 original Kodamas
It has solid reprints including Adeline, Resplendant Cathar, Gix, Yawgmoth Praetor, Skullclamp, and Blade of Selves