Koma, Cosmic Predator

This spell can't be countered.
{g}{u}: Create a 3/3 blue Serpent creature token
named Koma's Coil. Only activate if an opponent controls more creatures than you.
{t}, Sacrifice a land: Add X mana in
any combination of colours, where X is the
number of Serpents you control.
{p/b}{6}: Transform Coma. Activate Only as
a Sorcery.