nice of you to ask that. i was wondering if thats possible.
idea #1
GameMasters invasion.
Reward, GM box.
invasion map = there is some map that i don't remember its name, but it has fountain and i think it might called GM map or something like that.
GM box = drop jewel bundles, bless of light (low, mid, high) and ruud.
occurrence: 1 per 24h
idea #2 Acheron Elemental invasion
hero invasion (silver mobs) different silver mob in each map.
reward: elemental capsule (fire,earth,etc..).
each capsule will reward 5 errtels from the same element + blessing of spirit.
Alkmar invasion - fire
Debenter invasion - water
URUK invasion - darkness
UBAID invasion - earth
NARS invasion - wind
occurrence: 2 per 24h
idea #3 boss invasion
selupan, dark elf, erohim, silvester and core magriffy
reward: 10k ruud and 100 wcoin from each boss.
map: lorencia ring
occurrence: 1 per 24h
idea #4 First Rank invasion
summon the player who's ranked #1 in the server ranking, and who ever kill him win 500wcoin