When Dockside Extortionist enters the battlefield, it triggers, creating at least five Treasure artifact tokens.
Activate five Treasures by tapping and sacrificing them, adding 3.
Cast Wizard Mentor by paying 2.
Activate Wizard Mentor by tapping it, returning it and Dockside Extortionist to your hand from the battlefield.
Repeat.
If opponents control at least six artifacts and/or enchantments, this combo nets infinite Treasure tokens.
This clever loop relies on Wizard Mentor's tap ability to continuously return both itself and Dockside Extortionist to your hand, allowing you to replay them as long as your opponents control enough artifacts and enchantments to fund the cycle with Dockside Extortionist's Treasure tokens. While Garna, the Bloodflame is notably present in the card list, this specific loop uses the active bouncing of Wizard Mentor and Dockside Extortionist directly to hands and the battlefield rather than leveraging Garna's graveyard-return trigger, showcasing how a specific subset of pieces can drive an endless cycle of enters-the-battlefield value.