Being a supernatural ability it doesn't have to make complete sense.
In regards to piercing I'm not sure how you could work it in, but I wouldn't mind something like a blink triggering some sort of force-based impact. So essentially an ability that would hurl a figurative truck at the target. 

There's two things to consider when coming up with an ability in my opinion.
- Can you write it? The most important question when you've come up with an idea is if it's write-able. Gazing into the future or reading another character's mind sounds sweet... but from a technical perspective it means you'll have to constantly PM me to get some insight, or PM others to tell you what they're thinking. It's simply too much work.

- Is it useful? While abilities do not all have to be combat oriented, players should keep in mind that their character may be placed in a sticky situation. Using Fabricant's example, increasing the heat of something could be useful, but specifying it to raising body temperature would be very restrictive. [s](The former would be useful when I want some coffee, and the kettle's not working)[/s]

I can see either idea working, but they probably need a bit more thought.
If you need an opinion or advice I'm here, and others are welcome to offer their thoughts too.