In one such portal is a mystical sort of land, think World Of Warcraft, and that one place with the GIANT FREAKING MUSHROOMS. Twenty stories tall if they’re an inch, vaguely luminescent, and carrying on for miles in a vast forest. The ground is soft and forgiving, and animals of all kinds wander there. The Realm of Fae will give the character pleasant visions of possible magical potential. If a character has magic, there might be a way to increase its power. If a character is baseline, they can leave having memorized one very simple spell. (Light projection, heal small wounds, that sort of thing.)