Sun and moon (sorcerer fully traited preferred but not required, min1 trait)
Dokkalfar (10 split damage is horrible but that giant spider and ancient horror though. Trait to 0 to 3 his first 2 traits are not worth it in the long run that chance to stay in the game with horror 25% does make a difference sometimes.)
Giant spider (For this build the first two traits work well but incase of emergency break out that 3rd trait cause sometimes there is a slobber knocker and the game can come down to a giant spider vs the world)
Terraxis (gotta have all 6 colours covered. Siege is nice but for faster mana generation gotta get that stone link to work with dokkalfar.)
Two of the troops aoe and one troop does split damage. Two troops make mana for the team.
Other troops to consider traiting that this team uses spider swarm and ancient horror.
Spider swarm (0-3 traits. Venomous is good for those long games. However you do not need it with its spell being able to poison.)
Ancient horror (fist and last trait are not needed for this, however you want that 2nd trait to quickly fill horror or any remaining purple mana troop you have left, that being hero if possible. Damage is better than the spider per tick and it gains stats when it kills)