ver.

Chain Lightning

Lightning
Sorcery
Level 3
Range 9
Charges: 4
Fire an arcing bolt of electricity dealing 12 lightning damage.
The bolt repeatably arcs to new targets within the cascade range.
Each arc deals damage to all units along a beam.
The bolt can arc up to 5 tiles, and cannot pass through walls.
The bolt terminates when it cannot arc to any new targets.

Attributes:

12Damage
5Cascade Range

Upgrades:

7 - Chain Fireball
Cast Fireball for free on each target chain lightning bounces to
3 - Cloud Conductance
Chain Lightning can arc to blizzards and storm clouds
6 - Lightning Shield
Chain Lightning can arc to friendly targets. Friendly units hit by Chain Lightning gain 1 SH, up to a max of 3, instead of damaged.