Some Modern and Legacy decks can cast Ethersworn Sphinx in the 3- to 4-mana range, where it would be a very strong creature
Its flavor text sums the color up perfectly: Greatness, at any cost. This ethos allows black to achieve almost any effect that the other colors can at nearly the same strength but only by sacrificing life points, creatures, cards, and other resources
What set is Lulu, Stern Guardian from
And here we are: Arabian Nights' enduring crown jewel
This means that Kida, Royal Warrior can provide some much needed defence early on to protect those cheap and weak characters with useful abilities: such as steels own Razoul, Palace Guard - which has plus two willpower when undamaged - or emeralds Morph, Space Goo or sapphires Scrooge McDuck, Uncle Moneybags