You cannot Pendulum Summon monsters, except "tellarknight" and "Zefra" monsters. This effect cannot be negated.
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 "Satellarknight Zefrathuban" once per turn.
