refactor: Flattened the runestone blocks

src/main/java/electroblob/wizardry/block/BlockCrystal.java

@@ -1,5 +1,6 @@
 package electroblob.wizardry.block;
 
+import electroblob.wizardry.api.IElemental;
 import electroblob.wizardry.constants.Element;
 import electroblob.wizardry.registry.WizardryTabs;
 import net.minecraft.block.Block;
@@ -11,7 +12,7 @@ import net.minecraft.world.IBlockAccess;
 
 import java.util.EnumMap;
 
-public class BlockCrystal extends Block {
+public class BlockCrystal extends Block implements IElemental {
 
 	private static final EnumMap<Element, MapColor> map_colours = new EnumMap<>(Element.class);
 
@@ -26,6 +27,9 @@ public class BlockCrystal extends Block {
 		map_colours.put(Element.HEALING, MapColor.YELLOW);
 	}
 
+	@Override
+	public Element getElement() { return element; }
+
 	private final Element element;
 
 	public BlockCrystal(Element element) {