Reaper of Orzhova

When Reaper of Orzhova enters the battlefield,
create X 2/2 black-white Spirit tokens with flying,
where X is equal to the number of creatures in all
graveyards.
{2}{w/b}: Create a 2/2 black-white Spirit token with
flying.
The reapers will stop at nothing to claim the debt of
all- Orzhov Pontiff