The bond between an Aes Sedai and a Warder was mutually beneficial. An Aes Sedai gained a bodyguard, confidant and an ally who is intrinsically linked to her and can be compelled, to a certain extent, through the bond. The Warder gained greater stamina and physical prowess, the ability to sense shadowspawn at a distance, and greater resistance to injury. Most Aes Sedai bonded one Warder, but the Green Ajah allowed the bonding of multiple Warders.