Full resolution (894 × 894 pixels, file size: 162 KB, MIME type: image/png)
Source: Gratlofatic's deviantART "Starswirl the Bearded"
Appears on these pages
twilight sparkle dressed as star swirl the beardedAdded by URL
User blog:Guildmaster Grovyle/Discord, Spirit of Quantum Mechanics and Uncertainty (Or rather, Friendship is String Theory)
It appears to be entirely possible that Discord's brand of chaos and even friendship itself...