Board Thread:Questions and Answers/@comment-28324591-20160428023149/@comment-25741259-20160428152556

Units have different type of ai in arena, ranging type 1 to 7. I suggest u look that info on each of your unit.

Some of your unit are type 4 and 6. Which need a certain conditions to bb, example type 4 unit which is your colt has 30% chance to bb when bb gauge is up and 60 % chance to bb when enemy hp is below 50%. In other words u have higher chance to bb when your enemy is low in health.