Depressed Sailor

When Depressed Sailor deals damage to a player investigate. (Create a colorless Clue artifact token
with "2, Sacrifice this artifact: Draw a card.")
Delirium — If there are four or more card types
among cards in your graveyard, sacrifice
Depressed Sailor.
—
"When you have read these scrawled pages you may
guess why it is that I must have forgetfulness or death."
Dagon—H.P.Lovecraft