What you want for your Psychic Domination ability is something, anything with Command affix. I prefer the ICP Scarlet Spider Clone bosses(you can Dominate all 4 of the different clone bosses in the game, only Spidey clones have affixes). Command is an aura that boosts allied damage, so we want that. I suggest a melee enemy with the Command affix because ranged ones sometimes wanter around even if you use Hardened Leadership.