He sought wise counsel from the maiden of the trees . . .

Faeburrow Elder

Vigilance
This creature gets +1/+1 for each color among permanents you control.
{T}: For each color among permanents you control, add one mana of that color.

Its wide-reaching roots draw more than water.

The List

Bloomburrow Commander

Vigilance
Faeburrow Elder gets +1/+1 for each color among permanents you control.
{T}: For each color among permanents you control, add one mana of that color.

Secret Lair Drop

Dominaria United Commander

Throne of Eldraine Promos

Faeburrow Elder's middle ability can give it at most +5/+5, that is, +1/+1 each for white, blue, black, red, and green. "Gold," "multicolor," and "colorless" aren't colors. Similarly, Faeburrow Elder's last ability can produce at most five mana.

Since Faeburrow Elder is a green and white permanent, its middle ability usually gives it at least +2/+2 and its last ability usually produces at least {G}{W}.