Blood Gems Of the Red Lady -Tarot Card or Item

Written by Varik Keldun

[Info Text]
Blood gem : Crafted by the Blood Maidens these gems are worn by vampires out of both fear and faith. By wearing a blood gem a vampire sacrifices some of its own blood and a portion of any blood it consumes to keep the promise of never letting the Red Lady run dry. In return for this offering, The Red Lady bestows her gifts. But be warned, if one is reckless and draws in contaminated blood, she will not be kind.

To have a blood gem crafted requires blood, sweat, and tears.... not yours of course.
[Bottom of card Quote]
"The blood runs so sweet, Come let us drink!"

[General Information Concept]
as a Card type item it could have unlockable tiers that would first take more life to use but in return add more bonuses. (as we don't know how stats will work in the game I am leaving it simple with %) Tier 1 - 1% life lost per (x time - for now say 1 minute) / 5% blood consumed given to lady / 1 bonus at 5% Tier 2 - 2% life lost per (x time) / 10% blood consumed given to lady / 2 bonuses at 10% Tier 3 - 3% / 15% / 3 at 15% Tier 4 - 4% / 20% / 4 at 20% Tier 5 - 5% / 25% / 5 at 25%
Bonuses could include things like. attack damage attack speed cast speed cast damage magic resistance daylight adaptation weather/elemental resistance
To keep the gem in context with its theme. These would NOT be options Extra life / mana / essence. More life per feed / blood drawn. faster mana / essence regen.
[Skill Tree Concept]
as far as a skill tree (if it were made into a card) starting at the top and working down would be an easy way to go about it.

[Item Varient]
If this was not a card but rather a one use type item like a potion of sorts then different tiers of gems would naturally cost different amounts along with what bonuses they included.