WarGreymon Ace (Box Topper) (ST15-12) - Versus Royal Knights Foil

([Digivolve] Lv.5 w/[Greymon] in name: Cost 3)
[Hand] [Counter] [Blast Digivolve] (One of your Digimon may digivolve into this card without paying the cost.)
[Blocker] (At blocker timing, by suspending this Digimon, it becomes the attack target.)
[All Turns] [Once Per Turn] When a card is removed from a security stack, you may unsuspend this Digimon.

Overflow "-4" (When this card would move from the battle area or under a card to another area, lose 4 memory.)