Full Moons Rise gives Werewolves you control +1/+0 and trample too, but you can also sacrifice it to regenerate all of your Werewolf creatures, which is great against board wipes Theres also Cult of the Waxing Moon, which is a five-mana 5/4 that makes a 2/2 Wolf token whenever any permanent you control transforms into a non-Human creature, which should be happening an awful lot in this deck
Then you may exile a creature or planeswalker card from each graveyard
Some creatures possess valuable ETB effects, enhancing their utility when sacrificed with Grist's second ability
Though, I'd argue Archfiend of the Dross has a slightly steeper upkeep cost
Pursuing chains like this will also lead to significant creature buffs as well since Chishiro grants a +1/+1 counter to all of your modified creatures each turn
Long-term, I wouldnt mind having a few of this card as it seems like an easy way to deal a lot of damage to opponents in decks built to do this