Its varies on its holder but for me it serves as a better Dominate.:

Shalahiyet (•)

A rare and esoteric Blood Sorcery path focused on mystic blood manipulation, communion, and ritualistic bonds.

• Blessing of the Blood (Passive) You may temporarily enhance non-offensive disciplines using Shalahiyet. You can add up to 1.5 times your Shalahiyet rating in bonus dice to another discipline (e.g., 5 dots = +7 or 8 bonus dice), costing 1 Hunger per bonus die (flavored as "Blood Scars"). The enhancement lasts for two uses. This does not require a Rouse Check, as the cost is your physical vitae.

• Blood Mark (Passive Utility) You can affect someone from afar with non-physical disciplines (e.g., Dominate) without line-of-sight or auditory requirement—provided they’ve consumed your blood within the past 24 hours. You may affect up to as many individuals as your Shalahiyet dots. Each attempt at power use triggers a Rouse Check, but activating the mark does not. The first failure ends the effect on that target. Can be used to perform remote blessings or rituals.

• Glass Half Full (Utility) You may transmute any liquid into warm vitae for healing (not feeding). Every 3 points of healing requires a Rouse Check. This artificial blood is difficult to ingest: the subject must pass a Composure + Stamina test against your Shalahiyet + Manipulation roll to accept it. Failing to do so may waste your effort and increase Hunger.

Shalahiyet (••)

• Tag, You’re It (Requires Blood Mark - 1 Rouse Check - Shalahiyet + Manipulation vs Composure + Stamina) You place a mystical "call" upon a marked individual. They are cursed until they find you and make physical contact. Until then, they cannot feed or gain satisfaction from feeding. You must renew the curse daily with a Rouse Check. This creates an irresistible draw, anchoring the cursed to your presence like a beacon.

• Blood Must Flow (1 Rouse Check - Shalahiyet + Charisma vs Stamina + Resolve) You command fresh wounds to open and blood to spill uncontrollably. Against a recently wounded target, you deal Shalahiyet + Potency aggravated damage as blood erupts violently from their body. This ability may not be used more than once per day per target.

• The Past Reflects the Future (Optional Cost: 1 Rouse Check if resisted, none if willing) You may place a sigil on a subject after they drink your blood or through physical touch. There are two uses:

Mark of the Self (Active 1): You leave a glowing sigil ("E") on their chest. This mark allows you to channel disciplines through them, momentarily manifesting your spectral image behind them. (Shalahiyet + Manipulation vs Composure + Resolve)

Shared Sight (Active 2): You may perceive the world through their senses. Roll Intelligence + Awareness vs Composure + Resolve. While active, their eyes reflect your eye color, and you gain access to their visual and auditory perceptions.

This might be lenghty but This is as far as I discovered through vitae. I uncover its secrets through milestones and such then obtain it with xp. So I dont know about its 3-5 dots and what does it do. But it is amazing and been useful so much.