Smite Foe

Smite Foe is a runic spell that appears in Ultima Underworld II.

Spell Description
Smite Foe is the most potent attack spell known in runic magic, and it will kill most living creatures who find themselves its target - grievously injuring those few beings which can withstand its power. It has no effect, however, on undead beings or on magical constructs such as golems, since the spell relies on the fact that the target needs the ability to actually bleed. The spell is not hinted at anywhere, but found out by deducing that adding a "Vas" rune to the spell Bleeding improves its powers significantly.

Trivia

 * While the spell is great, since it comes late in the game it's useless on Rhiannon, where all enemies are undead, and the finale, which takes place in Britannia and and has a spell cap of 4th circle due to the Blackrock Dome.