High Altitude Treasure Trove

How to get it

Chests, baskets, and other items that can contain this.

The mice that drop it and how often, from MHCT. Rates are crowdsourced — check the sample size before trusting one.

Mouse	Location	Qty	Drop rate	Sample
Fortuitous Fool Mouse	Floating Islands	1	24%	23,700 catches
Richard the Rich	Floating Islands	1	10.03%	36,499 catches
Captain Crook	Cerulean Skyport	1	0.36%	19,462 catches

Possible rewards from opening this, with observed chances from MHCT.

A hidden trove of extremely valuable loot that can only be discovered by the most thorough explorers of the high altitude islands.