If any faction didn't get lucky with its racial ability, it's the demons. "Gate Opening" only becomes truly effective at level four. Of course, the previous three levels can also be used, for example, to block enemy archers... But no, Inferno already claims the title of the weakest faction in the sixth installment, and this ability, which fills up much slower than the others, only adds to that. It's unfair. Fortunately, the upcoming patch will strengthen the demon troops, which will at least help them.
+ unopened gates block infantry.
Let's see how they strengthen the demons...