Hiss!

The frigid aura also contained extreme fear.

Not to mention that they were just Puppet Immortals. Even if they were the real Immortals, they probably could not bear the Icebound Curse too... This was an existence that could even defeat the Undead Queen. Although Alex could cast the Icebound Curse currently, its power was worlds apart from that time. If the great Genbu had helped him cast the forbidden spell of level ninety-nine that time, then the one he cast now was at level one.

But i