====== Grav Crystal (XY/RV) ======
{{ http://nulll-void.com/games/hd3/crds/gravcrystal.jpg?nolink }}

====== Card Info ======
**Race** : {{:hidden:xy.png?nolink}} [[hd3:cards:list_xy|Xyloxi]] / {{:hidden:rv.png?nolink}} [[hd3:cards:list_rv|Rivi'i]]

**Type** : structure ([[hd3:cards:list_eng|Energy structure]])

**Rarity** : [[hd3:rarity#uncommon|uncommon]]

**Cost** : 0 {{:hidden:eng3.png?nolink}}

====== Abilities ======
**played** : Increases base HP by 4.

**automatic** : Generates 1{{:hidden:eng3.png?nolink}} and 1{{:hidden:eng5.png?nolink}}.