On lvl 6 what team did you use to clear the Lava Dragon? I already used Mavuika on the Tulpa?
Most 5*s I'm seeing used that I have:
Arlecchino C2R1
Varesa C1R1
Kinich C0R0
Emilie C0R1
I just can't get it done with Arlecchino/Emilie/XL/Bennett, Time keeps ending with like 3% health left.