Forloom, Resource Creator

As long as you control four or more legendary
lands, all creatures you control have base power
and toughness of five.
{t}: Create Hue, a legendary land with "{t}: Add {c}{c} to your mana pool."
{t}, {2}, Sacrifice a creature you control: Add {w}{w}{g}{g} to your mana pool, use this mana only
to cast instant and creature spells.
{t}: All creatures you cast this turn enter with an additional +1/+1 counter.