Titan: My brother thought of this: You summon a huge gun on your arm, then shoot a giant projectile that explodes for solar damage. Warlock: You summon 4 enemies: a Fallen, Hive, Vex, and Cabal. They deal Arc damage. Hunter: You turn invisible and teleport around the battlefield. You can only melee for Void damage and every hit teleports you somewhere else. Does not work on bosses, however.