Mog, Slam-Dancin' Moogle

Legendary creatures you control get +1/+1.
Mog's power and toughness are equal to the
number of other legendary creatures you control.
If you control more Plains than other basic lands,
creatures you control have vigilance. The same is
true for Islands and flying, Swamps and
deathtouch, Mountains and first strike, and
Forests and trample.