Once every 8 hours, you can do a castle raid - costing 2 raid flags.
The loot is increased by 3x (iron + ham) and a chance of loot ticket(s) - higher the raid league, higher chance of loot tickets and you get double the points.
Enemy heroes would benefit, being stationed on top of towers ( 10% defense, attack, mana generation) and like in wars, they is a random effect boosting them (attack increase, heal, arrows, new ones), but effects can change each time.
Thoughts?