This card is a little broken, but I probably wouldn't use it, because of the fact that you have to be in a good position for him to do anything useful
Day one of the preview season focused on the blue, red, and green Tyranid Swarm deck, with 40K's famous insectoid monsters turning into a counters and X-cost-centric creature type when brought over to Magic
You might choose to do this for a variety of reasons such as wanting a new style of holder (they've changed over the years) or damage to the existing holder
[Start of Your Main Phase] If you have a Digimon with the [CS] trait, gain 1 memory
otherwise you might stay behind your opponent
UR Ultra Rare Heavy Metal Raiders X SPELL Field The first time each DARK Machine monster you control would be destroyed by battle each turn, it is not destroyed, and if you took battle damage from the battle, it gains that much ATK after damage calculation, and keeps that ATK gain while this card is on the field