This is to help fight against absurd life gain strategies, as well as just allowing for some entertaining deck designs
For comparison, here is the standard version of Cruella de Vil - Style Icon
Brawl Not Legal Vintage Legal Timeless Not Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Not Legal Toolbox Notes and Rules Information for Lulu, Loyal Hollyphant: Choose a Background is a variant of the partner ability
Tinybones, the skeletal rogue introduced in Outlaws of Thunder Junction , has become Titanbones, a giant druid who protects the creatures of Yavimaya
You might have recursion lines that make this worthwhile, or indestructible creatures that don't interact as favorably with Path
And third, every opponent loses life equal to the creature cards in everyone's graveyards--an effect only made better by the milling performed when you were tempted by the Ring