Team Battleground Blitz
our team has currently mastered area 16. we get a few areas every day + must wait 24h for the next. with a total of 32 areas, the points count towards the respective events. for the brawl, however, these were not much.
a team has 4 members each. if one member does not unlock the next areas within 24h, the others can still continue. but for the ultimate reward all 4 members must have completed all areas.
the event can even be started with castle level 60. i wouldn't recommend that. the challenges are the same for all castle levels. so small castles get stressed, while big castles can complete the areas easy with many losses.
the info said that no boosters are effective. your units have only the base values