Drawing a card every single time a creature gets sacrificed is an exceedingly powerful effect that shouldnt be underestimated and Korvold decks should never have problems with card advantage as long as they keep the sacrifices flowing
3).Can you provide the samples for free
Legolas Greenleaf There are plenty of great legendary green creatures you could put into a Legolas Greenleaf deck that allow you to have a massive commander late game
4 Zareth San, The Trickster Creature Steal And Cheat Mechanics Allowing you to swap attacking Rogues to your hand, Zareth San, the Trickster can allow you to steal creatures from the graveyard, which becomes more powerful the more opponents you have
Wall of Blossoms (Ext, S, Block) The highest placing true cantrip on the list, Wall of Blossoms plays defense with the best of them, without costing you a single card
The card wasnt particularly good in Standard or in any other constructed format