It would need to have all 9.5 or higher subs except for one being no less than 9
Tormod is definitely the stronger of the two because black works better with the archetype and zombies have considerably more support that spirits, but you'll realistically play either one in your gravebreak deck, assuming your colors support them
Cosmic Power ensures that you will always have the option of refreshing your hand to six cards, allowing you to draw into the vital cards that you need for both offensive and defensive purposes
#8 Venusaur ex SAR (15,800 / ~$108) The third Kanto starter completes the PLANETA Tsuji trifecta
(Dont apply Weakness and Resistance for Benched Pokmon.) Gengar VMAX [D][D] Fear and Panic: 60x damage
The physical game can be expensive to get into, and live tournaments can be intimidating for children, so I thought this would be a good alternative until he's gained a little bit of experience and had time to build a physical collection