earth dragon balls:1. All 7 balls must be gathered in the same spot
2. Chant required (Chant changes a lot, big plot hole)
3. Only one wish per gathering
4. After the wish is made, Shenron will disappear
5. The Dragonballs will turn to stone for 1 year and scatter themselves around the Earth
6. Shenron cannot grant a wish that exceeds the creators power (Kami)
7. Cannot wish for something that involves another being if they disagree with the wish
8. Cannot wish to revive some if they dies from natural causes
9. You can revive any number of people, provided they died that relates their deaths
10. Shenron cannot revive anyone who has been revived before but the other dragons can revive any person wo has been revied before.
These are the original set of Dragon Balls for the earth. They were created when Mr. Popo asked Kami to give life to a small dragon model he had made. Kami did this but added the Dragon Balls onto this to give humans something to work towards. But they were misused for evil often and Kami was not going to allow their existence until good people like Goku changed his mind. After Kami and Piccolo re-merge in the Cell Saga, the Dragonballs become useless, as they are linked to life force of the creator (Kami). But when Goku goes to New Namek to fetch the new Guardian of the Earth, Dende, he is given the power of the Earth's Dragonballs. Dende's Shenron is identical to Kami's as he used the original model of Mr. Popo, from which Shenron was originally created. He proceeds to power them up so they can grant 2 wishes instead of 1, then between the Cell and Buu Sagas, he powers them up further so they can grant 3 wishes.
shenron