Sidewinder is a level 60 Bard ability learned after completing the job quest "The Ballad of Oblivion". It is an instant use, 60 second recast ability that normally delivers an attack with a potency of 100. If the target is suffering from one of Bard's Damage over Time (DoT) Weaponskills—Venomous Bite or Windbite—the potency is increased to 175; if both, 260.
Sidewinder is an ability of the Hunter class, learned for 300 AP from the Hades Bow. It deals double damage to monsters while dealing normal damage to everything else, and has the same range as the user's equipped weapon.
Sidewinder is the job level 1 command ability for the Hawkeye. It allows the user to unleash a powerful physical attack on all selected enemies. Selecting fewer enemies will increase damage dealt. It costs 1 BP.