Gauss Chain<br><img src="https://galaxylegion1-1faae.kxcdn.com/images//artifacts/metalgrid.png"/><br><br>Target: Your Planet<br><br>[ Planet Structure - Size:2, Research:2, Mining:1, Artifact:1, Defense:300 ]<br>If you occupy 10+ planets that are metallic, dyson,<br>and/or ecumenopolis when this is built, its bonuses double.<br>Limit 1/planet.<br>How to Obtain:<br><br>