Pendulum Effect
You cannot Pendulum Summon monsters, except 'tellarknight' or 'Zefra' monsters. This effect cannot be negated.
Monster Effect
If this card is Normal, Flip or Pendulum Summoned: You can target 1 other 'tellarknight' or 'Zefra' card in your Monster Zone or Pendulum Zone and 1 face-up card your opponent controls; destroy them. You can only use this effect of 'Aesatellarknight Zefrathuban' once per turn.
Atom 1.0
