This study explores the impact of communication factors on team performance within the context of Multiplayer Online Battle Arena (MOBA) games by analyzing a sample of 30,473 ad hoc virtual teams in the popular game, Dota 2. We focus on players' use of computer-mediated communication tools (pings and text chat) as well as other communication-related features, such as toxicity and conversational resilience. Using logistic regression models, we examine how these factors influence team performance, specifically winning the game. Our results indicate that teams with one or more pre-existing parties (i.e., groups of players who know each other) outperform teams of strangers under low and medium communication frequency conditions. However, active communication helps overcome the disadvantages of playing with randomly assigned teammates. We also found that toxicity is negatively associated with team performance and has a greater impact on less-skilled teams. Lastly, teams that recover faster from toxic communication perform better. These results confirm the importance of communication for improving team performance and suggest tailored communication strategies for different types of teams in the MOBA game setting.