Thank you for playing and for your feedback! There should be a pop up describing effects if you hover over summoning button, I will add it to the tutorial. Red line one (or lionfish that doesn't look like one) slows down and damages enemies in it's range. But faster enemies has really fast recovery so it feels like it does nothing. I will adjust some numbers. Bite does only 10% of the boss health, so you probably dealt final blow with it. I will add damage feedback and other changes after the jam.