Other than the essential weapons (kunai, flash bombs, shurikens, etc.), Rayne has been outfitted by Damian with poisoned blades. Two of the poisonous blades protrude from her knuckles on both hand (four) and one from each of her feet (two). This gives Rayne a total of six blades.
(i.e. The blades themselves are made of Promethium.)