All the other cards you compare Palp to in the OP practically never see competitive play. If Palp was as good as them, he'd be played as often as them (as in never).
That being said, in hindsight of both Palp and Manaroo, I'm not sure no range restriction abilities are such a good idea, as they create scenarios where the optimal strategy is have 1/3 of your list just run away the whole game.
Edited by LordBlades