Activate Kiora's Follower by tapping it, targeting Vizier of Tumbling Sands.
Kiora's Follower triggers, causing you to loot.
Resolve the Kiora's Follower ability, untapping Vizier of Tumbling Sands.
Activate Vizier of Tumbling Sands by tapping it, targeting Kiora's Follower.
Vizier of Tumbling Sands triggers, causing you to loot.
Resolve the Vizier of Tumbling Sands ability, untapping Kiora's Follower.
Repeat.
Unctus, Grand Metatect transforms this duo into an infinite loot engine by granting blue creatures a triggered ability that lets you draw and discard whenever they tap. Kiora's Follower taps to untap Vizier of Tumbling Sands, and in turn, Vizier of Tumbling Sands taps back to untap Kiora's Follower. Because Unctus makes your creatures artifacts, Kiora's Follower conveniently benefits from the static buff while feeding your graveyard and digging through your entire deck.