Papyrus, the Great

When Papyrus, the Great or another skeleton
enters the battlefield take control of
target creature with X power or less where X
is the skeleton's power -2
{w/u}{w/u}{t} target creature gets two +1/+1 counters.
{w/u}{w/u}{t} target creature gets a -1/-1 counter (only
use this ability if you have 10 creatures in your
graveyard)
"Nyeh heh heh!" - The great Papyrus