This art "Queen of Pain" was created for DOTA 2 "The International 2015" and officially licensed by Valve Store
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If you like it, you can buy it HERE!
Originally art was created on canvas by ink, then scanned and transformed into vector.
T-Shirt sample
Dota 2 artist Anuxi on the autograph session (2015) and another happy owner with already tired t-shirt on The International 2016