I have seen it used very few times indeed, mostly because the red deck has just won well before they get to six mana
However, the world rule delineates that only the newest world enchantment that was played will remain in play, no matter what the others name is
Example: Duplicant is a card with the abilities When Duplicant enters, you may exile target nontoken creature and As long as a card exiled with Duplicant is a creature card, Duplicant has the power, toughness, and creature types of the last creature card exiled with Duplicant
11 Divine Intervention Declares The Game A Draw First Printing: Legends White mana is all about justice, defense, civilization, and the law, and that is reflected in cards that protect creatures or let players gain life to stave off death
Cosmic Spider-Man Sorry folks, but Im just not putting a humanoid in the #1 slot over an actual, factual arachnoid spider