Linus is a Leader card for use with 7 Wonders when playing with the Leaders expansion.
Linus offers a discount of one resource when building Science (green) cards. He costs 4 coins to recruit.
Except for his name and image, Linus is identical to Archimedes from the Leaders expansion - he has the same benefit and coin cost. He could be considered an alternate art card.
Linus was part of the Kickstarter for the Dized board game companion app, awarded to certain pledge tiers once the $85,000 Stretch Goal had been reached.