Everybody have 6 heroes in the base..for me :
1- Vlad Dracula lv155
2- Skull Knight lv130
3- Pumpkin Duke lv140
4- Dread Drake lv125
5- Santa Boom lv105
6- Druid lv155
But sometimes i use one of those heroes : Death Knight lv100, Spirit Mage lv120, Ghoulem lv100, Cupid lv100 and Thunder God lv145.