Kopierysis, Grafted Horror

{b}{g}{u}, {t}, Sacrifice a creature: Search your
library for a creature card with converted mana
cost less than or equal to Kopierysis' power, put
it into your graveyard, then shuffle your library.
Put a +1/+1 counter on Kopierysis.
{b}{g}{u}, {t}: Kopierysis becomes a copy of target creature card in your graveyard with converted
mana cost less than or equal to Kopierysis'
power, except its name is Kopierysis, Grafted
Horror, it's legendary in addition to its
other types, and it has this