Antigrav Citadel<br><img src="https://galaxylegion1-1faae.kxcdn.com/images//artifacts/skycitadel1.png"/><br><br>Target: Your Planet<br><br>[ Planet Structure - Size:0, Research:1, Influence:1, Cloak:+11% ]<br>Planet must be Average size or smaller.<br>Can be upgraded with 4 (or more) structures providing at least +2 influence<br>Limit 1 per planet<br>Cost:<br>Energy: 1.1k<br><br>Scrap: 8 - 18 CTP<br><br>How to Obtain:<br><br>Eligible Artifacts:<br><br>