For people who want 4 copies of electroboo Type 3/2
Your best bet to grind for him is before you reach Temple lvl 25.
After this point, he becomes slightly less easy to grab.

He is a very good Bangboo to have 4 copies of since he is a x1,1 multiplier for your Temple resources.
(beware his Type1 sucks and lacks that ability, it's exclusively Type 2 and Type 3)