Background: If EOL care is to be person-centred and value-concordant, proactive conversations about individual preferences between residents, relatives, and staff are required. Nevertheless, the prevalence of conversations about preferences for EOL care is still low in residential care homes (RCHs), often relating to staff’s perceived lack of skills and confidence. Conversation tools may be useful to support staff in facilitating EOL conversations, but often focus more on documenting treatment priorities than on exploring underlying values and reasoning for preferences. In this study, we use the DöBra cards, the Swedish version of the GoWish cards, to support discussions about EOL care values and preferences in RCHs, and explore staff perspectives on use, usability, and impact. Methods: This qualitative study was based on data generated from two participatory action research processes in which RCH staff tested and evaluated use of DöBra cards in EOL conversations. Data comprise 6 interviews and 8 group meetings with a total of 13 participants from 7 elder care facilities. Qualitative content analysis was performed to identify key concepts in relation to use, usability, and impact of the DöBra cards with residents and/or relatives.Results: Based on participants’ experiences of using the DöBra cards as an EOL conversation tool in RCHs, we identified three main categories in relation to its usefulness. Outcomes of using the cards (1) included the outlining of content of conversations and supporting connection and development of rapport. Perceived impact (2) related to enabling openings for future communication and aligning care goals between stakeholders. Use and usability of the cards (3) were influenced by supporting and limiting factors on the personal and contextual level.Conclusions: This study demonstrates how the DöBra cards was found to be useful by staff for facilitating conversations about EOL values, influencing both the content of discussion and interactions between those present. The tool encouraged reflection and interaction, which staff perceived as potentially helpful in building preparedness for future care-decision making. The combination of providing a shared framework and being adaptable in use appeared to be key features for the DöBra cards usability in the RCH setting.