Game Version: 0.4.5
OS: Windows 10
No Crash Report
I have a Fusion of the Caustic and Ashmouth Cerberus and have fought both a mirror match of myself with the Crystal Ball and the Ashmouth Cerberus unfused in two seperate realms. Both times, my Spell Gems weren’t shared from my own Cerberus fusion.
The trait doesn’t stack with itself, but it does seem to interact with itself if another monster has it on the enemy team.