A personal favorite card in a deck like this is
Cataclysmic Gearhulk. it means you don't have to devote 3 entire slots to wrath effects when you can gifts for him/
unburial rites. He also counts as an artifact or creature so you can play him and keep him and a signet or him and another fattie.
Also, I see that you're only running 2 islands and one basic of each. I would suggest splitting your islands into an
Island and a
Snow Covered island. If you add any other basics I would also split them this way. it's a SUPER corner case, but this allows you to gift for basics that are the same but different names. Corner case, but will not impact the deck in any other way.