Reaper, Ghostly Terror

Ultimate: Death Blossom - (Reaper, Ghostly Terror enters the battlefield with four charge counters on him. At the beginning of your upkeep, remove a charge counter, then, when the last is removed, Reaper deals 7 damage to each opponent and 3 damage to each creature they control, then place five charge counters on Reaper.)
{b}, {t}: Reaper, Ghostly Terror phases out. Activate this ability only during combat.