(If this creature isn't monstrous, put four +1/+1 counters on it and it becomes monstrous.) P/T Set Number 91 Language Espaol Legal Formats Commander, Legacy, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Historic, Modern, Pauper, Pioneer, Standard, Timeless Rulings (3/8/2024) Once a creature becomes monstrous, it can't become monstrous again
Brawl Legal Vintage Legal Timeless Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Legal Toolbox Notes and Rules Information for Liliana, Death's Majesty: A creature that is a Zombie and has other types, such as a Zombie Jackal, isn't a non-Zombie creature
However, what we can do is look at heavily played Standard cards, and see when (or even if) their impending rotation caused people to sell on a card
You can see this at your local game store or from your favorite streamers
It is a huge payoff card for being mono white with its high stand alone power level