Brunnips

Creatures you control get +2/+2
At the beginning of your end step, you gain 1 life for each creature you control
{1}{g/w} until end of turn brunnips gets +2/+0, first strike, vigilance and is a cat in addition to its other types
{1}{g/w} until end of turn brunnips gains +1/+3, trample, and is a bear in addition to his other types