Melffy Fenny — Ruling

Effetto 1

This card's effect that returns it to the hand and Special Summons a Beast monster from your hand is a Trigger Effect that activates on the field. (It does not target. It can be activated optionally when your opponent Normal or Special Summons a monster, or if this card is targeted for an attack by an opponent's monster, but cannot be activated during the Damage Step.)
Returning this card to the hand and Special Summoning a Beast monster from your hand do not happen simultaneously.

This card's effect that Special Summons it is a Trigger Effect that activates in the hand. (It does not target. You activate it during your own Main Phase.)