Garthanos
Arcadian Knight
Spend every single extra attack AND CS die and a ACTION surge on several BM maneuvers... urrr meh.If you want to attack everyone around you in 3.5 that's a massive nest of feats to get Whirlwind Attack. In 4e it's a single power. I'm not sure you can do it in 5e. Pathfinder 2e meanwhile requires a 14th level feat.