I am generally a fan of Charm and Command cycles, as I think they allow for interesting gameplay, since you can change their function in the context of a given game as opposed to it being rigid in what it always does
Until then, I'm looking forward to seeing which cards you're all excited about in the comments, or telling me what you think of the cards I've mentioned here
Virtue of Knowledge has a lot going for it and is a great fit for any deck with lots of enters-the-battlefield effects
Enchantment - Aura Color tag templates(None) Spirit Loop Enchant creature you control Whenever enchanted creature deals damage, you gain that much life
Compatible with many popular TCG cards such as M:tG and Pokemon
I have to think its the art, the feeling that those 500 copies of Jin-Gitaxias are truly unique, whereas there are thousands of copies of Ragavan out there that look the same as a serialized version only without the xxx/500 printed on there