black flame ruler booster box of Japanese (Sealed) [Ships with Semi Rigid Box Protector] Released on July 28 401 Games Canada - Pokemon

Crypt Rats has another major downside here because it deals damage to both creatures and players, and without lifelink you could get caught by some burn spells ending your game

Dark Contract with Errors X TRAP Continuous Once per turn, if you control a "D/D" monster: You can negate all Trap Card effects on the field (other than this card's) for the rest of this turn (even if this card leaves the field)

For this Deck, it is just another means to send Soul Energy MAX

Furthermore, it also boasts of resistance to Fighting-type and can also retreat easily at the cost of just one energy card

But dont forget: research is key