Enjoying seeing the development over the updates!
3.1.9 - Using Artist's Clay (there should be an apostrophe, btw. It's the clay belonging to the artist. If it belongs to multiple artists then it's "Artists' Clay". Ditto for "Warrior's Buckler", etc. Not a biggy, I'm just a pedant :P ) on a card can result in a another card being cloned if they overlap and are both valid, even if the AC is dropped on an area where ONLY the intended card is present.
221 days ago(+1)
After some faffing about, I can do you one better. A gif of the bug in action. Hope it helps!
221 days ago(+1)
Found another minor text mistake. "Training Course"'s description says "Add +2 damage to a summoned golems" - judging by its behaviour that should be "golem" singular.