It then adds 4 copies each of Pollywog Symbiote, Essence Symbiote, and Paradise Druid as mutate targets with strong synergies
The Cavaliers from Core 2020 (Cavalier of Night, Cavalier of Dawn, and Cavalier of Flame) are obvious picks, each allowing us to do different things: destroying creatures and re-animating, destroying permanents and retrieving Colossal Hammer, or digging through cards and burning each opponent
With its second ability, you can use two mana and discard a card to create a 2/2 Knight token with vigilance
The commons and uncommons in Set Boosters tell little stories about Kamigawa, and there's always the chance of opening a card on The List
Prior to posting this I also made another change, swapping out Slate of Ancestry and putting in Hour of Devastation, as Neheb has 6 toughness and will survive its effects just fine