The Archivist
From Archon Arcana - The KeyForge Wiki
The Archivist • Logos • Creature • Rare • If you archive The Archivist, archive it faceup.While The Archivist is in your archives, instead of picking up all of your archives, you may choose to pick up any number of cards in your archives. • Artist: Dany Orizio • Card Number: MM:113, DT:026, MoMu:087
Commentary
When resolving the ability of The Archivist, "any number" can be treated as zero.
Source: "Any Number"