Okay, so, i was playing some of my friends in a match today, and one of them tried to play a Heroes Reunion on a planeswalker.. how is this possible.. is it even.. i was thinking not, i challenge him for this move, he said he had found in the official rules that it says its possible because the Heroes Reunion cast 7 health on target player. and than stated Planeswalkers are players. As i said my friend thought this weas possible. i thought not so we tried to find his so called rule and couldn't find it.. can I please get some help into as why, If it is possible or if it is not. my friends and i Seek inlightenment.