Sorry for the comment spam, but I maybe found another bug/misinterpretation?
Gazebo and Assassin:
The wording is "get +2 for each [empty circle].
To me that implies that summoned cards don't count.
Gazebo fills the field full of gnomes, but leaves empty circles, so I'd still expect to get my assassins powered up by those empty circles, but actually they get +0.
How summons are supposed to interact with the empty/filled circles is unclear to me.