Mjölnir

Relic - Mjölnir
Create this Relic in the Forge. Once forged, the Relic will appear in your available building list.
Prerequisites	Forge
Cost	10, 100, 50
Upkeep Cost	0 (yearly)

Summons a Thunderstorm on a border enemy area, damaging all Units and Buildings on a single tile for half a month. Activating the relic costs 150 Food and 150 Kröwns. Activation has a cooldown of 12 months.