Cell Tower Elemental

Defender, converge, undergrowth,
Vigilence, Reach (+1/+1 for each color
spent to cast Cell Tower Elemental (4/7)
If a creature died last turn, CT elemental
loses defender and can attack.
{g/u}{g/w} activate this ability only before combat
+Power equals number of creatures on battlefield.
+Toughness equals number of creatures in all graveyards.
"The trees had to evolve, and so we did."~An Elder
Saproling Dryad