Kaya, Geist Hunter + Street Urchin Combos

Combo 1 with Malcolm, Keen-Eyed Navigator

Steps

1. Activate Kaya's second loyalty ability by removing two loyalty counters from it, causing you to double any tokens you create this turn.
2. Activate your commander by paying {1} and sacrificing another creature or artifact, dealing 1 damage to an opponent.
3. Malcolm triggers, creating two Treasure tokens.
4. Activate a Treasure token by tapping and sacrificing it, adding {1}.
5. Repeat from step 2.