Blasters are always good for AoE. Archery and water are both very fun to play. I can also recommend a crab. Currently have a crabbermind build myself. It's pure AoE while the pets mop up any remaining mobs you can already hop in to the next mob group and start AoEing. Crabs are also very durable to do this. Added bonus are the massive leadership buffs for any teammates. You can really steamroll with a well built crab and make the team your on even better.