Constructs a turret that slowly build up charge and attacks nearby enemies. The turret deals 5 / 11 / 17 / 23 (+35% AP) magic damage on hit. At max charge, it fires a beam that deals 30 / 55 / 80 / 105 (+55% AP) magic damage. Heimerdinger can have a 3 H-28G Evolution Turrets active at once. If Heimerdinger gets too far away, his turrets will become dormant.

UPGRADE!!!: Technological enhancement upgrades this ability to H-28Q Apex Turret.

H-28G Evolution Turret Stats:

Base Health: 110 (+3% to 45% AP)

Base Armor: 10

Base Magic Resist: 25

Unleashes a barrage of 5 rockets that deal 70 / 95 / 120 / 145 (+60% AP) magic damage to the first enemy hit. Nearby Turrets gain 20% charge for every rocket that hits a champion. Additional rocket hits after the first to the same champion or monster only deal 20% magic damage. This damage is increased to 60% for minions.

UPGRADE!!!: Technological enhancement upgrades this ability to Hextech Rocket Swarm.

Hurls a grenade that deals 85 / 130 / 175 / 220 (+60% AP) magic damage in a target area and slows by 35% for 2 seconds. Enemies in the center are also stunned for 1 second. Hitting a champion fully charges nearby turrets.

UPGRADE!!!: Technological enhancement upgrades this ability to CH-3X Lightning Grenade.

Active: Upgrades Heimerdinger's next basic ability.

H-28Q Apex Turret: Places an upgraded turret for 10 seconds, dealing 80 (+40% AP) magic damage per shot, increased to 100 (+70% AP) magic damage at max charge. The turret slows for 1 second on hit.

Hextech Rocket Swarm: Fires 4 waves of rockets. Each rocket deals 135 (+45% AP) magic damage to the first enemy hit. Additional rocket hits after the first to the same champion or monster only deal 25% magic damage per hit. Once the target is hit by five rockets, the damage decays further. Rockets deal full damage to minions. The rocket swarm deals a maximum of 524 (+175% AP) magic damage to each enemy champion or monster.

CH-3X Lightning Grenade: Throws a bouncing grenade that discharges 3 times, each dealing 100 (+60% AP) magic damage. The stun and slow areas are larger, and the grenade now slows enemies by 40%.

Recast: Cancels this ability.