Formation I beat Spirit of Dragon King with:
x-x-x
Herja-Khan-x
Alcibiades-Main-Queen Pent
Sub: Ahmose (You can and probably should use something else)

HP ATK S. ATK M. ATK DEF S. DEF M. DEF CRIT RESILIENCE HIT DODGE BREAK BLOCK
MAIN 154,826 53,399 55,783 28,134 30,122 24,411 26,873 143 155 155 168 170 143
Queen Pent 159,524 69,824 71,000 33,150 37,411 31,736 195 195 164 185 155 163
General Alci 138,988 53,193 55,806 25,985 28,354 24,210 167 178 165 157 179 164
Herja 137,108 41,945 23,113 23,444 26,741 15 155 25 153 155 158
Khan 145,386 53,925 58,524 25,831 30,266 27,782 173 155 155 133 155 153
Ahmose 135,504 36,379 40,015 25,623 24,597 26,403 30 155 155 133 185 143