Not another Mind's Desire question

[Metman]

My recent standard play has brought up a question, for which I've been given a contradictory answer to. 

Djinn of Wishes
Djinn of Wishes enters the battlefield with three wish counters on it.
2BlueBlue, Remove a wish counter from Djinn of Wishes: Reveal the top card of your library. You may play that card without paying its mana cost. If you don't, exile it.

This card's activated ability is worded like Mind's Desire with regards to playing the card that is revealed, more or less.  I had asked a judge and was told that I could play a land that is revealed with the Djinn even if I had already played one for the turn and don't have another card that would allow me to play more than one land a turn.  I followed up the question with, "does me playing the revealed card have to be a legal play?  For instance can I play a creature, enchantment, sorcery, etc on my opponent's turn with the Djinn?"  I was told yes that I could. 

I went back and read a favorite discussion of mine in the rules forum about Mind's Desire, http://www.themanadrain.com/index.php?topic=31313.0, started by Rich and can't seem to justify the judge's decision pertaining to the Djinn.

What's the correct call here?  Was the judge correct with the rules on the Djinn?  If so, how is this any different than Mind's Desire? 

Thanks in advance. 

[Clariax]

My recent standard play has brought up a question, for which I've been given a contradictory answer to. 
This card's activated ability is worded like Mind's Desire with regards to playing the card that is revealed, more or less.  I had asked a judge and was told that I could play a land that is revealed with the Djinn even if I had already played one for the turn and don't have another card that would allow me to play more than one land a turn.  I followed up the question with, "does me playing the revealed card have to be a legal play?  For instance can I play a creature, enchantment, sorcery, etc on my opponent's turn with the Djinn?"  I was told yes that I could. 

If you reveal a land with Djinn of Wishes and have already played a land this turn, you are not able to play the revealed land unless you have some other effect which allows you to play an additional land, and can never play a land when it is not your turn.

Djinn of Wishes' and Mind's Desire's wordings are not the same.  Djinn of Wishes reads, "You may play that card without paying its mana cost."  Mind's Desire reads, "Until end of turn, you may play that card without paying its mana cost."  The Djinn is telling you to play the card right now, so you must play it during the resolution of the activated ability (or not at all).  Mind's Desire gives you a duration on when you can play it (until end of turn).  So with the Djinn, you can cast a sorcery, enchantment, creature, etc. even if it's not your main phase, since it ignores timing restrictions.  (It's during the resolution of an activated ability, not a time when you could normally cast any spell, even an instant.)  Mind's Desire is not telling you to play the card right then, it's setting up a duration within which the card can be played, so any timing restrictions must still be obeyed.

[Metman]

Thanks Clariax, that is more or less how I understood the card.  I think I was given an incorrect ruling.  

I really do appreciate the timely response we get here on TMD.

[LotusHead]

If you reveal a land with Djinn of Wishes and have already played a land this turn, you are not able to play the revealed land unless you have some other effect which allows you to play an additional land, and can never play a land when it is not your turn.

Djinn of Wishes' and Mind's Desire's wordings are not the same.  Djinn of Wishes reads, "You may play that card without paying its mana cost."  Mind's Desire reads, "Until end of turn, you may play that card without paying its mana cost."  The Djinn is telling you to play the card right now, so you must play it during the resolution of the activated ability (or not at all).  Mind's Desire gives you a duration on when you can play it (until end of turn).  So with the Djinn, you can cast a sorcery, enchantment, creature, etc. even if it's not your main phase, since it ignores timing restrictions.  (It's during the resolution of an activated ability, not a time when you could normally cast any spell, even an instant.)  Mind's Desire is not telling you to play the card right then, it's setting up a duration within which the card can be played, so any timing restrictions must still be obeyed.

I understand that playing a land is not like playing a spell, but it's still not clear to me why Djinn lets you play the revealed spell (say, a sorcery) on the opponent's turn.  Was it in the FAQ for Zendikar or is there an actual magic rule that allows it.  (ie, Can't > Can is what the confusion is all about)

Could you elaborate?

Thanks in advance.

[Clariax]

I understand that playing a land is not like playing a spell, but it's still not clear to me why Djinn lets you play the revealed spell (say, a sorcery) on the opponent's turn.  Was it in the FAQ for Zendikar or is there an actual magic rule that allows it.  (ie, Can't > Can is what the confusion is all about)

The Djinn tells you you can play the card, and since there's no duration of any kind mentioned, it means right now.  Whether it's a sorcery, instant, or any other spell type revealed, it's not going to be a time when you can normally cast it, since it's going to be during the resolution of the activated ability.  As for why you're allowed to do so, it's not because anything in the rules says you can, but because the card says you can and nothing in the rules says you can't.  The rules for casting spells tell you when you can cast a spell, they don't tell you when you can't.  The reason why you can't normally cast a sorcery on your opponent's turn is because there's nothing which says you can.  There's really nothing you can ever do in the game, be it cast a spell, play a land, attack, block, discard, etc. unless some card or rule says you can do it.  The rules say you can cast a sorcery on your main phase, when the stack is empty, and you have priority, and the activated ability says you can cast the revealed card right now.