This deck absolutely rocks
Silumgars flexible enter-the-battlefield trigger and his stats that enable him to take down most popular standard fatties could warrant a couple of mainboard slots, but I dont imagine seeing decks go for the full playset due to Silumgars high casting cost
Adeline, Resplendent Cathar Adeline, Resplendent Cathar might look unassuming, but it puts in tons of work in multiplayer games
Hearthstone has a particularly awful new player experience in my opinion
Plus, thanks to an added ability, Urgoros, the Empty One will be a lightning rod as your opponent will have to kill it before it accumulates too much card advantage
Aside from a couple random choices, 95% of the deck is focused on the goal of "put creatures in graveyard, profit" and that's good to see