You need your opponents to control six or more artifacts or enchantments for this combo to work
Pay two mana to exile Dockside Extortionist with Livio
Pay three mana to activate Livio's ability, return Dockside Extortionist to the battlefield.
Dockside Extortionist's ability will create six Treasure tokens.
Intruder Alarm's ability will trigger, untap your creatures
repeat the process