Which is Rarest item from Time displaced mini bosses?

Question

I heard some dropped brass button from the last Mini boss, can someone confirm?

Some say only the last boss drops rare itensz

Comments

my friend just loot box with carpet

Answer 1

I just killed the first 9 bosses, the last one is a pain head. I the most rare drop is Special Carpet Box and Supernatural Box

On second places some gems like Giant Topaz, Giant Emerald and Giant Sapphire.

Comments

Last one takes more time to kill than the rest of them together, it's insanely pointless since the waste with a big chance to die aren't worth.

Not even at high level tho, for just 50- 150 points it's out of mind.

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So the most are the both special box, thanks i gonna eddit.

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I am so sorry, I went through my boss loot and I only obtained a special carpet box and supernatural box. I cannot find one where I looted the special fx box so I'll edit your answer. Here's proof of supernatural box- https://imgur.com/DlA11by