Hieratic Dragon of Tefnuit

The monster effect "①: If only your opponent controls a monster, you can Special Summon this card (from your hand). You cannot attack with this card during the turn you Special Summon it this way" is an effect that is not classified as an Ignition Effect, Trigger Effect, Quick Effect, or Continuous Effect.

A Chain Link is not built when Special Summoning "Suanni Dragon of the Hieratic" using its own monster effect.

If "Suanni Dragon of the Hieratic" is Special Summoned by its own monster effect, the condition "You cannot attack with this card during the turn you Special Summon it this way" is also applied immediately.

The monster effect "②: If this card is Tributed: You can choose 1 Dragon-Type Normal Monster from your hand, Deck, or Graveyard, and Special Summon it, but its ATK/DEF become 0" is a Trigger Effect. (This effect does not target.)

The monster effect "choose 1 Dragon-Type Normal Monster from your hand, Deck, or Graveyard, and Special Summon it, but its ATK/DEF become 0" is an effect that must be activated if "Suanni, Dragon of the Hieratic Seals" itself is Tributed. It activates not only when Tributed by a card effect, but also when Tributed as a cost to activate a card effect, or when Tributed for an Advance Summon. (It also activates during the Damage Step.)