LoL Champion Build Guides: Xerath

First cast: Xerath starts charging, gradually increasing the range of Arcanopulse up to a maximum of 1400 while decreasing his movement speed by up to 50% over the next 1.5 seconds. While charging, Xerath cannot attack or use his other abilities. After 3 seconds, Arcanopulse cancels and half the mana cost is refunded.

Second cast: After a brief cast time, Xerath fires a beam of energy in a line the deals 70 / 110 / 150 / 190 / 230 (+85% of ability power) magic damage to all enemies hit.

Xerath calls down a blast of arcane energy, which strikes after a 0.5 second delay dealing 60 / 95 / 130 / 165 / 200 (+60% of ability power) magic damage and slowing enemies in a target 200-radius area by 25% for 2.5 seconds.

Enemies hit directly take 100 / 158.4 / 216.7 / 275 / 333.3 (+100.2% of ability power) magic damage and are slowed by 60 / 65 / 70 / 75 / 80 % instead. The empowered slow decays down to 25% over the duration.

Xerath fires a orb of energy forward in a line that detonates on striking an enemy, dealing 80 / 110 / 140 / 170 / 200 (+45% AP) magic damage and stunning them for between 0.5 and 2 seconds. The stun duration is longer the further the Shocking Orb has travelled.

Xerath anchors himself to his current location for up to 10 seconds. While anchored, Xerath is immune to displacement effects and gains the ability to cast Arcane Barrage up to 3 / 4 / 5 times but cannot cast his other abilities.

Rite of the Arcane can be cancelled early by moving or attacking and will automatically end once all shots have been fired. If Rite of the Arcane ends without using a single cast of Arcane Barrage, the cooldown is reduced by 50%.

Arcane Barrage: Xerath calls down a blast of arcane energy which strikes after a short delay, dealing 200 / 250 / 300 (+45% AP) magic damage to enemies within a moderate area. Arcane Barrage has a 0.8 second cooldown between casts (unaffected by cooldown reduction).

Xerath calls down a blast of arcane energy, which strikes after a 0.5 second delay dealing 200 / 240 / 280 (+43% AP) magic damage to enemies within a moderate area. May be cast up to 3 / 4 / 5 times while Rite of the Arcane is active.