Faeburrow Elder

Creature — Treefolk Druid

Vigilance

This creature gets +1/+1 for each color among permanents you control.

: For each color among permanents you control, add one mana of that color.

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}.