MetalGarurumon Ace (Box Topper) (ST16-12) - Versus Royal Knights Foil

([Digivolve] Lv.5 w/[Garurumon] in name: Cost 3)
[Hand] [Counter] [Blast Digivolve] (One of your Digimon may digivolve into this card without paying the cost.)
[When Digivolving] By trashing up to 3 cards in your hand, gain 1 memory for each card trashed.
[When Attacking] [Once Per Turn] You may trash 1 card in your hand to delete 1 of your opponent's Digimon with the lowest level.

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