During your cleanup step, discard down to your maximum hand size.
Cryptcaller Chariot triggers, causing you to create a tapped 2/2 Zombie creature token for each card discarded this way.
When the Zombie(s) enter the battlefield, Kindred Discovery triggers that many times, causing you to draw that many cards.
Discard down to your maximum hand size, as you are still in your cleanup step.
Repeat from step 2.

Infinite self-discard triggers

Near-infinite creature ETB

Infinite draw triggers

Infinite rummaging

Near-infinite tapped creature tokens

Cryptcaller Chariot

Kindred Discovery

Activate Psychic Frog by discarding a card.
Cryptcaller Chariot triggers, causing you to create a tapped 2/2 Zombie creature token.
When the Zombie enters the battlefield, Kindred Discovery triggers, causing you to draw a card.
Resolve the Psychic Frog ability.
Repeat.

Near-infinite +1/+1 counters on a creature

Psychic Frog

Activate Greater Good by sacrificing a creature with power 1 or greater, causing you to to draw cards equal to the creature's power and then discard three cards.
Cryptcaller Chariot triggers, causing you to create a tapped 2/2 Zombie creature token for each card discarded.
Repeat.

Infinite looting

Near-infinite creature LTB

Near-infinite death triggers

Near-infinite creature sacrifice triggers

Greater Good

Cast Sage of the Falls by paying {4}{U}.
When Sage of the Falls enters the battlefield, it triggers, causing you to loot.
Cryptcaller Chariot triggers, creating a 2/2 Zombie creature token.
When the Zombie enters the battlefield, Sage of the Falls triggers, causing you to loot.
Repeat from step 3.

Near-infinite creature tokens

Sage of the Falls

Discard a card.
Cryptcaller Chariot triggers, creating a 2/2 Zombie creature token.
When the Zombie enters as a Villain due to Maskwood Nexus, Prowler triggers, causing it to connive.
Repeat from step 2.

Prowler, Clawed Thief

Maskwood Nexus

During your cleanup step, discard cards down to your maximum hand size.
Cryptcaller Chariot triggers, creating a number of tapped 2/2 Zombie creature tokens equal to the number of cards you discarded.
When the Zombie(s) enter, Mentor of the Meek triggers that many times.
Holding priority, activate Ashnod's Altar by sacrificing a Zombie, adding {C}{C}.
Resolve the first Mentor of the Meek trigger, causing you to pay {1} to draw a card.
Resolve all remaining Mentor of the Meek triggers, as applicable, choosing not to pay.
As it's still your cleanup step, you will again discard cards down to your maximum hand size.
Repeat from step 2.

Combos with "Cryptcaller Chariot"