Twinblade of the Phoenix

Twinblade of the Phoenix is an epic two-handed sword for warriors and retribution paladins.

Source
This item drops from Kael'thas Sunstrider in the Eye.

Patches and Hotfixes
This sword was upgraded to Item Level 141 in patch 2.2. It gained 6 minimum damage, 9 maximum damage, 1.9 DPS, 2 stamina, 2 attack power and 1 critical strike rating.