If each player on a team is dealt 2 damage, each of those players loses 2 life and the teams life total goes down by 4
This trap cards ability to put non-monster cards from your deck into the graveyard is especially valuable, since it gradually gives you more options with the previously mentioned flip effect monsters
These sleeves make great business cards, as their usefulness ensures that they are kept, and not thrown away prematurely
Chthonian Nightmare isnt as good at reanimating big creatures, since what you can get back gets limited by the amount of energy it can produce
There are references linked below to PokGyms rules forum, especially about this rule
Once you have sorted all your cards, you can start looking for your site to sell