Ward

In the game: help ward

Protect a target against one element.

Makes the target resistant to the added elemental rune. You can only have one protection spell on you at any time.

Details

With the Reverse rune Ward becomes Bane (help 68).
With the Reverse rune Ward becomes Bane, which makes the target weaker against that element (HELP BANE).

The game also finds it under: ward, wards, elemental ward, iceshield, fireshield, shockshield, resist element.