Now I found out that you need to put at least 30 blocks in your deck depending on the deck.

saiyan-35 blocks
red-all the ones that raise your anger
blue-30 blocks
black-25 blocks
orange-25 physical blocks and 5 energy none if you are the HT trunks level one.
namekian-all the one that are of its color like the ones that say you may have up to 8 copies of this card in your deck.

This is my personal way i make my decks