Flogos, the Ogdoadic Boundless — Ruling

Effetto 1

The effect that Special Summons a monster from your opponent's Graveyard and sends another monster from their field to the Graveyard is a Trigger Effect. (This effect can be activated in the Graveyard if this card is sent from the field to the Graveyard, or on the field when this card is Special Summoned from the Graveyard. The effect targets 1 face-up monster your opponent controls and 1 monster in their Graveyard with equal or higher ATK. It can also be activated during the Damage Step.)
When resolving this effect, Special Summon the first targeted monster from your opponent's Graveyard to their field, and send the second targeted monster from your opponent's field to the Graveyard. (These actions occur simultaneously.)

The effect that adds this card to your hand is an Ignition Effect that can be activated in the Graveyard. (Send 1 card from your hand to the Graveyard as the cost of activating this effect.)