All the time in the Afterlife

All the time in the Afterlife
Action
Harbinger of Skulls
+1 stealth action. Put this card in play with 2 counters from the blood bank, 4 counters if the acting Harbinger of Skulls is greater than capacity 7.
Any Harbinger of Skulls you control may take a +1 stealth action to add one of their blood to this card and untap.
In the third of your Untap phases after this card enters play, burn this card and your prey must burn cards from their library or pool equal to the number of counters on this card.

Art: A dessicated looking vampire grinning in a hoodie and jeans taking a leisurely stroll away from a riot.

Cool "time bomb" effect but with no real way to disarm it. Khazar's diary did it right, imo.