This is something I was wanted to touch on, so thanks for giving me a good way to talk about it without a forced segway. I may include some more elements, I'm talking with some of the folks about that concept and it's definitely worth exploring however I don't think there will be more elemental ones that those included. However, you bring forth an interesting idea. If a character was ice he would most likely just be an extreme case of a water manifest, corrupted and unhealthy. Just like, if a fire manifest became more and more absorbed/ruled by his own personality that he became a magma one- burning everything and one- They would still have the powers that they originally had but it might come out in more extremes ways. Manifest work with their element, not because the element decided to give them the chance but because their personality attracts the element so naturally. It looks at this morose character and goes "I belong here" just as much if blight would look at a mass grave and say the same. To magic, the two are the same. We are both apart of the universe and exist with it. So, you'd always recharge as "space" inside you opens up for new magic. So, a manifest would have a lot of little ticks that relate to their element: EG: A manifest of water might rain on other peoples parade without meaning too. They might, for example: Have a bad relationship with Earth ones. Making them stoic but when the flood gates are gone they drown everyone in thoughts and feelings. A mage couldn't sap you to slumber naturally. It would take a very long time- a couple of hours- if things are normal and by some point you're character would start to feel tired/ frustrated to be around that mage, unawaringly. Sort of think of someone you didn't want to be around who kept demanding more of your energy, even if you didn't realize they were draining you, eventually your head will start to go "ok. This guy can fuck off now" but if you're...say in a fight. Him sapping you as you're running about, tense, thinking a mile a minute is quickly to exhaust you pretty fast. A mage can't sap you to death. You would however need to stay asleep for a long time, a day or two at least as you're body draws in new magic.