Nikita, Ruler of Behemoths

Whenever a creature with power 4 or greater
enters your battlefield, draw a card.
{2}{g/w}{g/w}: Look at the top four cards of your
library, you may cast a creature spell with power
4 our greater from them without paying it's
mana cost (activate only if you control creatures
with a total power of 8 or more).
Partner with Orion, Dragon Slayer