This card's second effect is useful to ensure the effects of "Lubellion the Searing Dragon" or "Albion the Branded Dragon" resolves successfully against a targeting negate card such as "Effect Veiler" or "Infinite Impermanence". It is also a net 1+ in card advantage since the effects of "Lubellion" or "Albion" can use themselves as Fusion Materials even while they are in the GY.
While the player controls "Despia, Theater of the Branded", if a Fusion Monster they control would be destroyed by battle or card effect, this card's second effect can be activated in response by Tributing that Fusion Monster. Then, if the attack/effect continues and destroys this card, "Despia, Theater of the Branded" can Special Summon that same Fusion Monster back from the GY.