Yamiku, Ruthless Power Seeker

When Yamiku, Ruthless Power Seeker enters the battlefield, you may search your library for a
card named Handorpios, Venomous Claw or Capricornus, Gate's Torturer, reveal it, put it
into your hand, then shuffle your library.
{t},{b}{b}{b}, Sacrifice Yamiku, Ruthless
Power Seeker and another creature:
You may cast a Demon or a Skeleton
from your hand without paying its mana cost,
until end of turn.
"Power at any cost!" — Yamiku