- "Cannot be Normal Summoned/Set. If an "Aesir" monster is on the field, you can Special Summon this card (from your hand) to your opponent's side of the field in Defense Position." is not treated as a monster effect. (It is a procedure to Special Summon a Special Summon Monster. Special Summon this card this way does not start a Chain Link.)
- After "Jormungardr the Nordic Serpent" is Special Summoned from the hand using its own procedure, if it is sent to the Graveyard, it can be Special Summoned by an effect like "Monster Reborn".
- The effect "If an "Aesir" monster is not on the field, destroy this card." is a Continuous Effect. (It is also applied during the Damage Step.)
- The effect "If this face-up Defense Position card you control is changed to face-up Attack Position: Take 3000 damage. This effect can only be used once while this card is face-up on the field." is a Trigger Effect. (It does not target. It is a mandatory effect that activates when "Jormungardr the Nordic Serpent" is changed from face-up Defense Position to face-up Attack Position. The effect is activated by the player that controls "Jormungardr the Nordic Serpent", and that player takes damage.)