PS Plus, there’s an interesting point in the rules regarding redraws, stating that if the increase doesn’t affect the outcome of the battle, it doesn’t count as a redraw.
It only counts when attacking a hero; attacking a Castle, even an unprotected one, counts.
And in general, the ability to break through (with or without losses) isn’t the main thing here. What matters is saving mana points due to not breaking through.
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