Faithful Haruspex

Exploit (When this creature enters the battlefield, you
may sacrifice a creature.)
When Faithful Haruspex exploits a creature,
surveil X, where X is that creature's toughness.
(Look at the top X cards of your library, then put any number of them into your graveyard and the rest on
top of your library in any order.)
Embalm {4}{u} ({4}{u}, Exile this card from your graveyard: Create a token that's a copy of it, except
it's a white Zombie Naga Wizard with no mana cost. Embalm onl