Mimics by default replace 1/50 Lootr chests, and are noticable as they take a small breath every 17 seconds, and the gems on their texture is slightly off-color.
A simple but efficient config will allow you to change the odds of a Lootr chest being replaced by a mimic, which chests/dimensions should be blacklisted, weights, bite damage, grab damage, grab damage frequency, and how long it takes for them to return to a dormant state.
Mimic Loot:
Daedalus Stormbow
Band of Regeneration
Flying Knife
Golden Shower
Life Drain
Flower of Fire
Snowball Cannon
Flower of Frost
Spectral Silt (from BountifulBaubles)
Thoreso's Mimics Team
