As long as this card is in play, permanents with adventures are one less mana to cast
If that wasn't amazing enough, if your opponent removes Chaos Archfiend from the field in any way, it allows you to Special Summon a Chaos Synchro monster from your Extra Deck, giving you quick access to cards like Chaos Angel and Chaos King Archfiend
Salesman techniques
In this guide, Nihil Zero is the #1 beginner pick because it starts around $51 / 7,500, followed by other budget and mid-range Japanese Pokemon boxes by price tier
The fun stuff happens with the +1 that let's you flash out creatures, but I really like the -3 to drop two 2/2 Wolves onto the battlefield and stay alive for more fun times
Still, many players enjoy first scouring the cardpool themselves