[Arts] Ice Wall: Magic Igloo

* [Ice Wall] is turned into an igloo when there are 6 or more walls and the starting point of the ice wall connects to the endpoint. Grants immunity to [Freeze] debuff and reduces damage received from [Ice] property attacks by 60% while inside the igloo. Also heals the caster’s HP by an amount equal to the caster’s HP recovery value every second.{nl}