Dota 2 Wiki:Copyrights

DOTA2 content and materials are trademarks and copyrights of Valve Corporation. All content on (with the exception of Valve-owned images, art, and lore) is licensed under the Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0). An excerpt from the license in human-readable format(which is linked above) follows:  You are free:
 * to Share — to copy, distribute and transmit the work.
 * to Remix — to adapt the work.

Under the following conditions:
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 * Share Alike — If you alter, transform, or build upon this work, you may distribute the resulting work only under the same, similar or a compatible license.

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For the purposes of, the Attribution clause means that any content from this site covered by CC-BY-NC-SA must be attributed to come from if it is referenced from another site.
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