What is another word for playing into hands?
Pronunciation: [plˈe͡ɪɪŋ ˌɪntʊ hˈandz] (IPA) 
The phrase "playing into hands" refers to a situation in which someone's actions unintentionally benefit another person's agenda. There are numerous synonyms and alternative phrases for this term, such as "playing into someone's plan," "working in someone's favor," "falling for a trap," "feeding into a scheme," "assisting an opponent," "serving someone's purpose," "giving an advantage," "enabling success," and "facilitating a goal." These phrases all convey the notion that someone is inadvertently helping another person or group achieve their goals, often to their own detriment. It's important to be aware of when we may be playing into someone's hands and to take steps to avoid doing so.
