What would u pick. Excluding talent Team now is druid champ assassin ninja. Arena and raid wise
Cyclops is better DPS, werewolf is tanky, and pain-da is just pain-da; laughable. You are already building up to make a DPS Arena team. This team that you currently have can't be serving you well in raids though. You would need a tanky Hero for raids. PD is a bruiser, WW is a full tank, and Cyclops has "meh" HP and a decent AoE.
Between the three, I'd pick Cyclops both in Raids and in the Arena.
Werewolf is just Tank. But I'd rather have a ranged hero than having him.
Pain-Da sucks! Heck I don't even know why he costs so much Shards. A same level Angel, the cheapest hero in Shards, can easily kill Pain-Da 1 on 1.