Crabmon (EX3-015) - Draconic Roar

[On Play] 1 of your blue Digimon gains [Jamming] for the turn. (This Digimon can't be deleted in battles against Security Digimon.) When played from digivolution cards, you may place 1 blue level 5 or lower Digimon card from your hand under that Digimon as its bottom digivolution card.