"Infernoble Arms - Hauteclere" — Ruling

Effetto 1

This card's effect that makes 1 monster be able to make a second attack during each Battle Phase is an effect that activates on the field. (It targets 1 face-up monster you control an can be activated optionally during your Main Phase while this card is equipped to a monster.)
Preventing you from declaring attacks with other monsters and making 1 face-up monster you control be able to make a second attack during each Battle Phase, and destroying this card, are not treated as happening simultaneously.

This card's effect that destroys 1 monster is an effect that activates in the Graveyard. (It targets 1 face-up monster on the field and can be activated optionally if this card is sent to the Graveyard because the equipped monster was sent to the Graveyard. It can be activated during the Damage Step.)