Drain is a multipurpose projectile ability belonging to the T column of spells. It has two modes: Slow and Weaken.
The drain missile will deal damage to and slow an opponent while healing its owner. On an ally, it will provide healing and an increased movement speed. When the missile reaches its range, it will change trajectory towards the nearest player of either team. It bounces off pillars.
The drain missile will deal damage to an opponent and reduce the damage they deal. On an ally or its owner, it will provide healing and an increased damage output. It bounces off pillars.