When you would DigiXros, this effect allows you to replace 1 of the cards in that Digimon's DigiXros requirements.For example, when you would play a card with [Shoutmon X4] × [Beelzemon] in its DigiXros requirements, you may place this Digimon for the DigiXros instead of [Shoutmon X4] or [Beelzemon].

No, you can't. This card can only replace 1 card in the DigiXros requirements when DigiXrosing, not add to the DigiXros requirements.