The Pair of Spiked Leather Boots of Feanor [3,+12]
+10 to speed. It increases resistances: +25% nexus. It is vulnerable to
damage by disenchantment. When worn and activated, it temporarily hastes
you, recharging every 200 turns.
Level 40, Rarity 70, 6.0 lbs, 150000 Gold.

(EyAngband 0.5.2)