The ShiftstonedEternal Power Calculator is a deck-building tool that visualizes your odds of drawing enough Influence and Power based specifically on the cards found in your deck.
Just hit master with this list. Solid stuff. Had some wild games where Scouting Party would come down after a couple Wumps and the burst was surprising (and the drawwwww). Nice little combos.
The fact that you got to masters with this deck is disturbing. Played 10 matches in Bronze 2 and only managed 1 win and had enough. I nearly ranked down in Bronze, I could understand having issues in Diamond. Not one match did I feel like this deck applied any form of aggro pressure against my opponent, and with any aggro deck by the time I reached turn 4-6 it was over, its either the automatic double torch in opening hand for opponent or double SST, double Rizahn, or triple Matko with no answer in site. Back to what works, Rakano for me.
How many games did you play? could just be variance. Also way more rakano / life steal / aggro in lower tier compared to high masters so that will affect the win rate obviously,
It definitely is underpowered. I wanted another two-drop yeti in the deck and there isn't anything amazing there. It's possible Yeti Snowslinger or even Yeti Windflyer would be better. I don't think Rakano Outlaw is good enough for the deck. Warcy is just less important for this deck than traditional Skycrag aggro because there are fewer aegis units and no weapons to carry the damage.
I haven't tried Slope Sergeant. My biggest concern with him is that he will usually cost around 3-4 and make a yeti not attack for a turn. That said, I haven't tried it and maybe it gives the deck more gas as the game goes longer. If I didn't want another 2-drop I might add another Chunk and another Snow Pelting.
There's also dusk raider? Or maybe just more snowpeltings or rockslides since you're playing howling peak smuggler. Not sure how important 2 more 2drop units are in that slot