Cryptex - Murders at Karlov Manor - 422

Artifact

Mana Cost: {2}

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

Rare · Murders at Karlov Manor · #422 (MKM)

Illustrated by Yeong-Hao Han