| Machine King Prototype | |
| Type: | Effect Monster |
| Sub-Type: | Machine |
| Attribute: | EARTH |
| Level: | 3 |
| ATK: | 1600 |
| DEF: | 1500 |
| Text: | Increase the ATK and DEF of this card by 100 points for each Machine-Type monster on the field other than this card. |
| Password: | 89222931 |
| Printings |
Battle Pack 3: Monster League (BP03-EN019) -
2014-08-01 Dark Revelations Volume 4 (DR04-EN132) - 2007-11-14 Shadow of Infinity (SOI-EN012) - 2007-07-03 |