While not seen quite as often as Boil or Boiling Seas, its still just as capable of outright kicking specific Commander decks out of the game
What there is exact info on is the custom backstory for these little guys and gals: it casts you as a "badass gingerbread force relentlessly destroying candy monstrosities" in "Sweettooth Village"
In other words, youll be able to make 90% of the designs you have in mind here, but some of your fancier, more outlandish card designs probably dont have a compatible card frame
Plague Mare is obviously not as good, as its a 2/2 instead of a 3/3 with first strike, and it doesnt deal damage to the opponent or planeswalkers they control, but it does have some upside
Now the equipped monster can't attack, be Tributed, change its battle position or activate any effects it has
When activated, you choose one monster you control, and all other cards on the field and in both players' hands are sent to the Graveyard