Ice Wall

Ice Wall
Required For: Frost Nova (L1 Wizard), Ganbantein (L1 High Wizard).
Max Level: 10
Type: Active
SP Cost: 20
Target: 1 cell
Range: 9 cells
Cast Time: Instant
Cool Down: None
Duration: 4 + 4*SkillLV sec or until broken
Effect: Creates a row of 5 Ice Wall cells perpendicular to the line between the caster and the target cell and centered on the target cell.
An Ice Wall cell cannot be entered, but it may be attacked. Ice Wall cells have 200+200*SkillLV HP that lowers at a rate of 50 per second until it reaches 0 and then the wall disappears.
If the wall is attacked the HP also lower by the damage dealt to the wall. You can not have more than 5 Ice Walls active at the same time.
[LV 1] 400 HP / 8 sec
[LV 2] 600 HP / 12 sec
[LV 3] 800 HP / 16 sec
[LV 4] 1000 HP / 20 sec
[LV 5] 1200 HP / 24 sec
[LV 6] 1400 HP / 28 sec
[LV 7] 1600 HP / 32 sec
[LV 8] 1800 HP / 36 sec
[LV 9] 2000 HP / 40 sec
[LV 10] 2200 HP / 44 sec