Hawkeye's Bow + Vizier of Tumbling Sands + North Pole Patrol Combo

All permanents on the battlefield (Hawkeye's Bow attached to either Vizier of Tumbling Sands or North Pole Patrol on the battlefield and Vizier of Tumbling Sands and North Pole Patrol without summoning sickness on the battlefield).

Activate Vizier of Tumbling Sands by tapping it, targeting North Pole Patrol.

If Vizier of Tumbling Sands has Hawkeye's Bow attached to it, Hawkeye's Bow triggers, dealing 1 damage to each opponent.

Resolve the Vizier of Tumbling Sands ability, untapping North Pole Patrol.

Activate North Pole Patrol by tapping it, targeting Vizier of Tumbling Sands.

If North Pole Patrol has Hawkeye's Bow attached to it, Hawkeye's Bow triggers, dealing 1 damage to each opponent.

Resolve the North Pole Patrol ability, untapping Vizier of Tumbling Sands.

Repeat.

Infinite damage