Bulbasaur

vigilance, basic pokemon
When Bulbasaur enters the battlefield, search
your library for a basic Forest card, put it onto
the battlefield tapped, then shuffle.
{1}{g}, {t}: Evolution (flip this creature face down,
then search your library for a card that evolves from
this creature and put that card onto this creature.
Move all modifications from this creature to the new
card. Both cards will change zones simultaneously,
but only count as one creature)