I find the arrows during the blocking phase to be incredibly confusing when you start having board states with 4+ creatures attacking and multiple blockers being assigned. Telling if a creature was blocked or not is pretty easy, but beyond that I think the UI needs some sort of rework or fix for this phase.
For instance, I just spent about two time-outs trying to figure out what the hell the arrows were trying to tell me, with two arrows pointing from defending creatures going to a creature that wasn't being double blocked and an arrow from an attacking creature pointing seemingly no where in the middle of the screen. And then I turned out to have misunderstood them even after all the time spent trying to make sure I had it right. It didn't really impact the end result of the game but I found it pretty obnoxious how difficult it was to try and decipher all the cryptic arrows.
External link →