You are making the skill look like an active skill and that it targets a random permanent.. I'm pretty sure you want it to be activated manually. Also, it's too wordy. Since I'm an English nerd, I'll help you out here: "-insert quanta used here- : While this creature is in play, the target permanent cannot be destroyed. Absorb
per turn."
-insert quanta used here- <<<< If no quanta is used, just put 0: in its place.