2fc7bb06_UO_Player_Guide___Spellweaving__Effect
[Spell] Essence of Wind Anathrae [Secs] 3.0 [Mana] 40 [Skill] 52 [Effect] 
Performs an area cold attack surrounding the caster. All targets can receive penalties of 2 faster casting and swing speed slowed by 0.5 seconds, though these penalties can be resisted. In addition, the faster casting penalty does not affect the cap; if you have 6FC you will not feel the casting penalty. The penalty lasts for a few seconds.
ABCUO Player Guide - Spellweaving
Effect