I ascended Karolina when Champions 2.0 launched and am just trying her out now. I wanted to flag that all of her abilities are bugged and she will only generate protect tiles on all three power colors. I don’t fully recall what she’s supposed to do, but it’s a bit more than that. The ability descriptions are similarly bugged and don’t make sense at levels 1-4 and are exactly the same if the ability power is set to 5. I’m assuming this is an issue with the 5* and that the 4* is fine. Then again, how many people play Karolina in the first place?