[All Turns] [Once Per Turn] When an attack target is switched, reveal the top 3 cards of your deck. Place 1 [Parasitemon] or 1 level 5 or lower black Digimon card among them as this Digimon's bottom digivolution card. Trash the rest.
[All Turns] When one of your Digimon's effects adds to this Digimon's digivolution cards, this Digimon may digivolve into [GroundLocomon] in the hand without paying the cost.