Like most Magic: The Gathering cards, the value of Bayou depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Revised Edition)
Outside of green, there are plenty of other options you should be considering
This red, blue, and black deck combines massive creatures with powerful spells to weaken your opponents and overwhelm them with superior might
Id been thinking about it lately, both because Guilds of Ravnica is only a month away, and because with the lull of Core 2019, Ive had plenty of time to update my cube
A legal deck can still be inconsistent, slow, unfocused, or poorly prepared for the format