When I first saw Apex Devastator, I remember seeing the card say Cascade, Cascade, Cascade, Cascade, thinking that had a very clean yet Mythic feeling. When developing a new ability or using an ability in a new way, how do you determine when it's correct to write out the keyword four times versus saying "Cascade four times". In a similar way, how do you decide, for instance, in the case of Gitaxian Spellstalker, whether it should be prowess, prowess, as opposed something like Prowess 2?

Templating has an emotional impact component. While clarity is usually the driving factor, excitement is also important.