In a triple battle, if a Pokemon with Storm Drain was on one side and an opposing Pokemon on the far side used a water move, would the Storm Drain still stop the water move?
>If two Pokemon have Storm Drain in a multi battle, the faster Pokemon will draw the attack. In the event of a speed tie, the Pokemon who has been on the field longest will draw the attack.
http://www.smogon.com/bw/abilities/storm_drain