Cryptcaller Chariot + Kindred Discovery + Hardened Academic

Cryptcaller Chariot

Kindred Discovery

Hardened Academic

How it works

1. Activate Hardened Academic by discarding a card.
2. Cryptcaller Chariot triggers, causing you to create a tapped 2/2 Zombie creature token.
3. When the Zombie enters the battlefield, Kindred Discovery triggers, causing you to draw a card.
4. Resolve the Hardened Academic ability.
5. Repeat.
6. During your cleanup step, discard down to your maximum hand size.
7. Cryptcaller Chariot triggers, causing you to create a tapped 2/2 Zombie creature token for each card discarded this way.
8. When the Zombie(s) enter the battlefield, Kindred Discovery triggers that many times, causing you to draw that many cards.
9. Discard down to your maximum hand size, as you are still in your cleanup step.
10. Repeat from step 2.