I responded in kind, each of us moving in a deadly dance of strategy and counter-strategy. My mana surged, fueling my [Comprehension], but something was wrong. With every move I made, the skill demanded more of my energy. The pull was subtle at first, barely noticeable, but as the game progressed, I began to feel the drain more acutely. My mana reserves were depleting faster than I anticipated, each move costing me more than the last.