Boss Spawners are an objects that you can find them in Titanium Chests or craft them at the Crucible using:
Boss Spawner - Yandeon (10 Spirit Sticks, 10 Ice Shards)
Boss Spawner - Shindeon (5 Red Fire Sticks, 10 Dark Shards.
They can summon a Boss that is around Level 400-600.
If you want to sell them, the max price you can get for them is:
Boss Spawner - Yandeon (170.000+. To sell this you need Huge Inventory from Mutant Market (15 gems)).
Boss Spawner - Shindeon (120.000+).
Ill help you!
There is a new village top right from Yandi. You can activate a new teleporter and its in the biome "swamp". There are 2 new merchant-bots. There is also a pet that you can get him with you being as "your" pet so take care of him!!
New items: gravestone, new paint.
When you put some gravestones with pets that died (put the text there) they sometimes can spawn as a ghost with "angle" emotion. You can kill that ghost with powers (for example: fireball, giant, venom etc...)
Next coming: Tiki village and sakura village.
.do not waste your gems on mutations, use em for "double inventory; teleport item; objects you need to buy to place".
Goodluck!
I did all those today
And made a full spirit set!
I worked alot for em!!