Fossil Warrior Skull King — Ruling

Effetto 1

This card's effect that allows it to attack twice during each Battle Phase is a Continuous Effect.

This card's effect that allows it to inflict piercing battle damage is a Continuous Effect.

This card's effect that discards a card from your hand and Special Summons a monster from your opponent's Graveyard to your field is a Quick Effect that activates on the field. (It targets 1 monster in your opponent's Graveyard. It can be activated optionally during your opponent's turn, but cannot be activated during the Damage Step.)
Discarding a card from your hand and Special Summoning the targeted monster from the Graveyard happen simultaneously.