Verona, Angel of Undeath

Flying, Hexproof, Fear
Undeath 5 (When this card is exiled, add five black
mana to your mana pool)
When Verona, Angel of Undeath is exiled, put
six time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast Verona, Angel of Undeath without paying its mana cost.