Oracle

Plane - Shandalar 

Whenever a player taps a permanent for mana, that player adds one mana of any type that permanent produced.
Whenever you roll Chaos, target player can't cast spells until a player planeswalks.

Officiele rulings

10/1/2009
A plane card is treated as if its text box included “When you roll Planeswalk, put this card on the bottom of its owner’s planar deck face down, then move the top card of your planar deck off that planar deck and turn it face up.” This is called the “planeswalking ability.”

10/1/2009
A face-up plane card that’s turned face down becomes a new object with no relation to its previous existence. In particular, it loses all counters it may have had.

10/1/2009
The controller of a face-up plane card is the player designated as the “planar controller.” Normally, the planar controller is whoever the active player is. However, if the current planar controller would leave the game, instead the next player in turn order that wouldn’t leave the game becomes the planar controller, then the old planar controller leaves the game. The new planar controller retains that designation until they leave the game or a different player becomes the active player, whichever comes first.

10/1/2009
If an ability of a plane refers to “you,” it’s referring to whoever the plane’s controller is at the time, not to the player that started the game with that plane card in their deck. Many abilities of plane cards affect all players, while many others affect only the planar controller, so read each ability carefully.

10/1/2009
You’re “tapping a permanent for mana” only if you’re activating an activated ability of that permanent that includes the T symbol in its cost and produces mana as part of its effect.

10/1/2009
Eloren Wilds’s first ability affects any permanent players tap for mana, not just lands they tap for mana.

10/1/2009
The additional mana is produced by Eloren Wilds, not the permanent that was tapped for mana.

10/1/2009
The chaos ability prevents the affected player from casting permanent spells (artifacts, creatures, enchantments, and planeswalkers), not just instant and sorcery spells. It doesn’t stop the player from playing lands or activating abilities (such as cycling or unearth).

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