[[Digivolve] Lv.4 w/[Greymon] in name: Cost 3]
[Reboot]
[On Play] [When Digivolving] Give 1 of your opponent's Digimon [Collision] and" [Start of Your Main Phase] This Digimon attacks." until their turn ends.

[Opponent's Turn] [Once Per Turn] When attack Targets change, if this Digimon has [Greymon] in its name, trash your opponent's top security card.