They come with a level up mechanic where you can pay mana into it to get increasingly better buffs
Mostly, this gives you a Zombie at the end of your turn if you lost 2 or more life, and losing life on your own turn isnt something that will just happen -- youll have to create situations to make that part work, and even though Black is always capable of doing that in Limited, it is highly unlikely you get a critical mass of those cards going that allows you to consistently make a Zombie, and you probably need to get at least two out of this for it to feel worth it
Of course, you need a sacrifice outlet for Sun Titan (preferably one that helps you win the game) but thats not so hard to do
Well, okay, its an Explore with a 1/1 body attached, but value is value
When it comes to resilience, how is skipping out on commander tax thanks to its special commander ninjutsu ability
While the deck is definitely focused around creatures, there are also a number of notable noncreature spells