- You can buy one from an NPC for 3 Scrolls of Wisdom.
- Some experienced players have Portal Scrolls hidden in their item filter. That way your screen is not cluttered with lots of scrolls. This matters in the endgame, where you can get your required supply of both Wisdom and Portal Scrolls from NPC-s by picking up and selling Orbs of Transmutation or Blacksmith's Whetstones.
Path of Exile