Rally

Rally is a 'non-targeted' summoner spell. It allows you to summon a ward that increases the attack damage of nearby units by 10-35 for 15 seconds.

Strategy
Rally can be used to temporarily increase the damage output of your nearby team members, as well as provide an extra target to grab attention from turrets.

Trivia

 * Prior to V1.0.0.111, Rally was popular in quick IP farming because it functioned as an extra ward to take turret fire.
 * Unlike wards it can not be placed in a selected location, but it will be summoned directly in front of the direction your champion is facing.