Wisdom is a Diablo 2 Resurrected runeword created by combining pul + ith + eld into a 3 socket helm. It requires at least level 45 to equip.
Wisdom is a mid level helm runeword released in patch 2.4. It seems to be an Amazon focused runeword with a lot of focus on mana regeneration, something which low level Amazons tend to struggle with.
The fact that it requires a Pul rune makes it hard to justify as a runeword you create while progressing, as you will likely replace this by something better later on.