Hey Chief, June 2019 Clan Game rewards and dates were announced by Supercell today.
This month the the Clan Games will start June 22 and ends on May 28.
Season Challenges will not be affected as it lasts the entire month, so it will always run together with Clan Games, Clan War Leagues and all other special events.
The main prizes this month are a Shovel of Obstacles, Book of Heroes, Book of Fighting, Book of Spells and a Rune o Elixir.
To unlock the last tier the Clan must achieve 50.000 points. With the limit of 4.000 points to each member, the clan must have at least 13 active members.