Yuma, Proud Protector

This spell costs less to cast for each creature card in your graveyard.

Once during each of your turns, you may cast a creature spell from your graveyard.

This spell costs less to cast for each card type among permanents you've sacrificed this turn.

Flying, trample, haste

Whenever Korvold deals combat damage to a player, put X +1/+1 counters on Korvold and draw X cards, where X is the number of permanent types among cards in your graveyard.

Undergrowth — This spell costs less to cast for each creature card in your graveyard.

When this creature enters, return target land card from your graveyard to the battlefield.

Vigilance, trample, haste

Whenever Rhino attacks, if you've cast a spell with mana value 4 or greater this turn, draw a card.

Flying

Whenever Sin enters or attacks, exile a permanent card from your graveyard at random, then create a tapped token that's a copy of that card. If the exiled card is a land card, repeat this process.

Flying

Whenever this creature enters or attacks, mill three cards.

Whenever one or more creature cards are put into your graveyard from your library, put one of them onto the battlefield.