User blog comment:Miskos3/Fairy Tail Episode 253: Tartaros arc: Silver Memories, Review/@comment-24039234-20151003120305/@comment-2214433-20151004194113

Any Ice Devil Slayer could possibly hurt END, however, a Fire Devil Slayer would be the most effective because Slayer mages are immune to their own element.

Now, if Silver chose his powers with an intention to kill END, why didn't he go for the most effective option?

Not sure how else I can explain myself.