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Play during an attack on a card you control by an opponent who controls more Power-generating Sites than you. Gain Power equal to the cost of target attacking Character. You can play only one "Heat of Battle" each attack.

Play when attacked by an opponent who controls more Power-generating sites than you. Gain Power equal to the cost of target attacking character. You can only play one Heart of Battle during an attack.

Play during an attack on a card you control by an opponent who controls more Power-generating Sites than you. Target an attacking Character :: Gain Power equal to the printed cost of target. You can only play one "Heat of Battle" each attack.