Clash Birthday Challenge Bygaga 04.06.2019 2019, Clash, P-10C, Weekly Challenges Reward Comments 04/06/2019 Clash Birthday Challenge overview Rainbow Six Siege – Clash Birthday Challenge Wish Clash a Happy Birthday with the Ubisoft Club Challenge. Destroy 20 attacker drones while defending to unlock the Clash’s Gift weapon skin for the P-10C. Clash’s Gift weapon skin Clash’s Gift weapon skin