See Challenge # 150.

ROFL. Oh, wow, that's great flavour. And I've no idea if I'd use it or not. I guess it can produce a cheap extra turn to launder with Magosi, the Waterveil. And if you can avoid having any spells or creatures which can be turned against you, the best/worst you get out of the turn is approximately nothing.

But you do get a draw step and an untap step if you have instant "target opponent" spells to use in the following opponent's turn.

And I keep wondering if you can get other use out of it, eg. in a hypothetical "creature attacks each turn if able" deck :)

And of course, it would be great in multiplayer, it's almost an extra turn if there's any opponent you feel is more scared of someone else than you.

Well, you probably won't be playing anything at instant speed after the extra turn. A sensible opponent will tap all of your lands.

Oh yes, good point, I forgot they could do that "for free".