The triggered ability doesn’t target any permanent. You choose which one to return as the ability resolves. No player can respond to this choice once the ability starts resolving.
25-02-2015
wotc
Ancestral Statue’s ability is mandatory. If Ancestral Statue is the only nonland permanent you control when its ability resolves, you must return it to its owner’s hand.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.