This creature is immune to Retreat, Instakill, Disposal, and all instant removal and ATK reduction skills, and it cannot be healed by any other creature or hero. This creature cannot learn Sacrifice or Bloodrage through Melding.
It is confirmed that Hollow will protect against Alice and Angel Prime. Also, while it prevents abilities like Mass Heal, the Healer Rune II will still increase ATK until his next turn. Does not prevent healing via Convalescence.
This skill cannot be learned.