Tell me what it is event #1

Hello DD'ers,the 1st event from the Tell me what it is event series will be the today one!
This infos will be given as a conversation between our heroes
Please note that im only describing places,monsters/objects or characters,not attacks or skills.
Sieg says "Watch out!Hide behind a cactus or that shiny thing will pwn u!"
There we go,go ahead guyz and tell me what it is!

its in cobolt raid at the cactuse's

4-8History

3-7H xD

im guessing stage 3-2H?

but they hid behind ROCKS
not cactuses
so i could be wrong.

so my answer is
the shiny thing is the magic storage in 3-2H
>.>

3-6H

Larva

Event ended guyz!thanks for all that took part.
By that dialog i wanted to say that:
-the cactus are only in the desert,and desert is only in episode 3
-the shiny attack is the main attack of the reaver boss from 3-2H
The answer was Reaver,or Larva as our winner said
Please congrats the winner which is Garr!
Congratulations!

argh.
i was close.

grats garr!
when is the next event btw?

yea lind you were very close,but i was thinking at a monster this time not at a place,and that one was the larva boss from 3-2H lol
and the next event is tomorrow at same hour

TyTy