This creature reads: Whenever an opponent casts a spell with mana value 3 or less, Scalding Viper deals 1 damage to that player. Basically, if youre against a deck that purposefully keeps their cards cheap, a single copy of this card could end them
Then you can spend two mana when she dies to shoot each foe equal to her power, so she's a bit of a win-con, and that ability is Rakdos so she's got that color identity instead of Black
Sail into the West Wheel effects are usually sorcery speed, but Sail into the West is instant speed
Ill be weighting this list towards Commander, where most of the best horrors have the creature type arbitrarily and are just powerful cards without any typal synergies
Winota naturally supports lots of powerful Stax pieces, like Drannith Magistrate, Magus of the Moon, and non-Humans like Ethersworn Canonist
The deck is built around creatures with a high toughness, and attacking with creatures that should normally be passive