Rhumlik, Defector Spellbinder

Flash
When Rhumlik, Defector Spellbinder enters the battlefield, return target nonland permanent to its owner's hand if you've cast it during your opponent's turn. Otherwise, you may change the target of target spell or ability with a single target.
"Outraged at the satyrs manners, he defected at young age never to return, seeking the lost knowledge of
ancestral spellbinders."