Diglett

Evolution {2}{r/g}
When Diglett enters the battlefield, search your
library for a Forest or Mountain, place it on the battlefield, then shuffle you library
———{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}

Evolution: Add a +2+2 counter and the ability:
{r/g}{r/g}{t}: Add a +1/+1 counter on target creature you control and a -1/-1 counter on target creature and opponent controls until end of turn