Hurkyl's Lament

Put a Dirge counter on Hurkyl's Lament at the
beginning of your end step.
Artifact spells cost an additional {x}, where X is
equal to the number of Dirge counters on
Hurkyl's Lament. Artifacts in play have "Pay
an additional X at the beginning of your upkeep,
or return this card to its owner's hand. X is equal
to the number of Dirge counters on Hurkyl's
Lament." Sacrifice Hurkyl's Lament if there are
no artifacts in play.