2fc7bb06_UO_Player_Guide___Spellweaving__Effect
[Spell] Arcane Empowerment Aslavdra [Secs] 4.0 [Mana] 50 [Skill] 24 [Effect] 
For a period of 15-30 seconds, increases your spell damage and healing effectiveness in other spells (magery, chivalry, necromancy). Summoned creatures have more hit points and higher dispel resistance.
ABCUO Player Guide - Spellweaving
Effect