Not really sure about this: I play Reflector Mage and target my opponents commander (let's say Neheb, the Eternal). If they choose to send Neheb to the command zone instead, does it still mean that they can't cast Neheb until my next turn ? Thanks in advance. :)
Your opponent won't be able to cast their commander until your next turn. This latter part of Reflector Mage's ability doesn't depend on the ability's target going to its owner's hand, so as long as the ability's target is legal when it resolves, the prohibition will be in place no matter where the creature ends up because of replacement effects.









