Kayn, the Shadow Reaper

At the beginning of your upkeep, if your devotion to red is 5 or more, transform Kayn into Rhaast, Darkin of Death. If your devotion to blue is 5 or more, instead transform Kayn into Kayn, the Shadow Assassin. If both of these requirements are met, choose any one of the options.
"Will you prove worthy?"
"Probably not..."