Heimerdinger lays down a rapid-fire cannon turret equipped with a secondary pass-through beam attack (turrets deal half damage to towers).

H-28 G Evolution Turret

Heimerdinger fires long-range rockets that converge on his cursor.

Hextech Micro-Rockets

Heimerdinger lobs a grenade at a location, dealing damage to enemy units, as well as stunning anyone directly hit and slowing surrounding units.

Heimerdinger invents an upgrade, causing his next spell to have increased effects. 

Gain Move Speed while near allied towers and turrets deployed by Heimerdinger.