|Paladin of Baha-who?|
Whatever his reach is when enlarged + 5ft. Because that's what the feat says.
Marid Style (Combat, Style)You conjure tendrils of icy water to strike your enemies from a distance.
Prerequisites: Con 13, Wis 15, Elemental Fist**, Improved Unarmed Strike, base attack bonus +9 or monk level 5th.
Benefit: You gain one additional Elemental Fist (Advanced Player's Guide 158) attempt per day. While using this style and Elemental Fist to deal cold damage, you gain a bonus on cold damage rolls equal to your Wisdom modifier, and your reach with your unarmed strike increases by 5 feet.