Cryptex (Extended Art)

   Artifact

, Collect evidence 3; Add one mana of any color. Put an unlock counter on Cryptex. (To collect evidence 3, exile cards with total mana value 3 or greater from your graveyard.)
Sacrifice Cryptex; Surveil 3, then draw three cards. Activate only if Cryptex has five or more unlock counters on it.

Illustrated by Yeong-Hao Han