[Suggestion] Beware of Chests: Add Mimics as Rare Uncut Support Gem Source

To address the scarcity of Uncut Support Gems during the campaign, it would be fun to find magic and rare chests, but upon interacting with it, has a rare chance to transform into a "Mimic."

To reward observant players, these chest's twitch every few seconds. When opened, the chest sprouts a maw of teeth and eyes made out of gems. Upon defeat, Mimics drop 1-2 Uncut Support Gems.