Quicksilver Sea

Plane — Mirrodin   

When you planeswalk to Quicksilver Sea or at the beginning of your upkeep, scry 4. (Look at the top four cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.) Whenever you roll , reveal the top card of your library. You may play it without paying its mana cost.

32 PC2 • ENCharles Urbach

™ & © 1993—2012 Wizards of the Coast

Legal in: Legacy,Vintage,Commander

Oracle Text (click to copy):

Quicksilver Sea Plane — Mirrodin When you planeswalk to Quicksilver Sea or at the beginning of your upkeep, scry 4. (Look at the top four cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.) Whenever you roll {CHAOS}, reveal the top card of your library. You may play it without paying its mana cost.

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View this MTG card on Gatherer

6/1/2012
You play the card (meaning it play it if it's a land card or cast it if it's a nonland card) as part of the resolution of the chaos ability. Timing restrictions based on the card's type are ignored. Other restrictions, such as "Cast [this card] only during combat," are not.
6/1/2012
If you reveal a land card when resolving the chaos ability, you may play it only if you haven't played a land yet that turn.
6/1/2012
If you cast a card without paying its mana cost, you can't pay any alternative costs, such as evoke or the alternative cost provided by the morph ability. If it has  in its mana cost, X must be 0. However, you can pay optional additional costs, such as kicker, and you must still pay mandatory additional costs, such as the one on Fling.

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