Divination Sigil

The Divination Sigil is a tool added by Blood Magic that is used to check important details of both the Blood Altar and the player's network, including the altar tier and total Life Essence storage levels. As of Minecraft 1.8.9, this can be crafted by right clicking with a piece of redstone dust then a Blank Slate on a placed sign of Arcane Ashes.

Usage
While holding the Divination Sigil, there are two possible uses for the player. When aiming at a Blood Altar and right clicking, a chat printout will display the total essence stored within the altar, the current tier, and its maximum capacity. When right clicking anywhere else, a chat printout will display the total essence stored within the player's personal network.