When you make the extra attack of the Light property, you can make it as part of the Attack action instead of as a Bonus Action. You can make this extra attack only once per turn.
Nick
MasteryXPHBp. 2142024SRD
Raw data
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"When you make the extra attack of the Light property, you can make it as part of the {@action Attack|XPHB} action instead of as a {@variantrule Bonus Action|XPHB}. You can make this extra attack only once per turn."
],
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}