What are the abilities of Spinerock Knoll?
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Hideaway 4 (When this land enters, look at the top four cards of your library, exile one face down, then put the rest on the bottom in a random order.)\nSpinerock Knoll enters tapped.\n{T}: Add {R}.\n{R}, {T}: You may play the exiled card without paying its mana cost if an opponent was dealt 7 or more damage this turn.
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