Hello.
I have Chandra, Acolyte of Flame onto the battlefield. I +0 her. It reads "Create two 1/1 red Elemental creature tokens. They gain haste. Sacrifice them at the beginning of the next end step."
Now I cast Switcheroo. I choose one of the Elemental tokens and, for example, a Spore Frog controlled by one of my opponents. The spell resolves. Will my opponent have to sacrifice his Elemental token at the beginning of my end step?
No, the effect creates a delayed trigger for you to sacrifice them at the end of turn rather than granting the ability to the elementals themselves. Because of this when the trigger occurs and you go to sacrifice them you will be unable to because you cannot sacrifice a permanent that you do not control. The end result of this scenario is your opponent permanently keeps that 1/1 elemental, you keep the Spore Frog, and your other 1/1 elemental gets sacrificed.
I have Chandra, Acolyte of Flame onto the battlefield. I +0 her. It reads "Create two 1/1 red Elemental creature tokens. They gain haste. Sacrifice them at the beginning of the next end step."
Now I cast Switcheroo. I choose one of the Elemental tokens and, for example, a Spore Frog controlled by one of my opponents. The spell resolves. Will my opponent have to sacrifice his Elemental token at the beginning of my end step?
thank you!
In any case, Genini2's answer is backed up by the rules:
RULES OF MAGIC :
http://magic.wizards.com/en/game-info/gameplay/rules-and-formats/rules