Ancient Inscription

{1}{t}: Look at the top card of your library. If
it is a mutant or artifact card, you may put it
into your hand. Otherwise, you may put it
back or put it into your graveyard. Put a
ritual counter on Ancient Inscription.
{t}, Sacrifice Ancient Inscription: Put a 9/9
legendary blue whale mutant horror creature
token with hexproof named Leviava onto
the battlefield. Activate this ability only if there
are 7 or more ritual counters on Ancient
Inscription.