Tava's Favor is a craftable set available in all armor types. When you dodge an attack, you receive the blessing of Tava and gain 9 Ultimate over 3 seconds.
Tava's Favor is part of the Thieves Guild DLC. The crafting station is located in Hew's Bane (Forbear's Junction). You can craft any armor, weapon or jewelry of this set in any motif style you know, as long as you have 5 traits researched (per item). You can trade crafted pieces to other players. Each set item becomes bound on equip.