Crimson Domain

The Crimson domain focuses on the power within. The gods of Crimson - including Bhaal, Ilmater, and Loviatar - value self preservation and control above all else for clerics in this domain. Pick the Crimson domain for an off-tank healer that can control the battlefield while dishing out damage and healing. 

Crimson Domain Spells

 

Cleric Level	Spells
1st	false life, cure wounds
3rd	lesser restoration, hold person
5th	revivify, bestow curse
7th	stoneskin, dominate beast
9th	dominate person, hold monster

Hematic Exchange

When you choose this domain at 1st level, you gain proficiency in heavy armor, but can not use any weapons while wearing any armor or holding a shield.

Transfusion

Also starting at 1st level, you can use the blood of your enemies, infused with your deities' divine magic, to sustain yourself. When you damage a creature with a cleric cantrip, you can use your bonus action to gain temporary hit points equal to your proficiency modifier.

You can use this feature a number of times equal to your Wisdom modifier (a minimum of once). You regain all expended uses when you finish a long rest.

Channel Divinity: Blood Manipulation

Starting at 2nd level, you can use your channel divinity to strengthen your magic at the cost of your own vitality.

As a bonus action, you can channel your own blood into your holy symbol, strengthening a healing spell or a cantrip. You take 1d4 necrotic damage, which can not be reduced by immunity or resistance, to either cause a cleric cantrip to deal extra necrotic damage equal to your proficiency modifier or restore an additional amount of hit points to a single creature equal to your proficiency modifier when casting a spell that restores hit points to a creature other than you.

Channel Divinity: Crimson Reservoir

Starting at 6th level, you can use your channel divinity to sacrifice your own vitality to heal your allies.

As an action, you consume all of your temporary hit points to heal a number of allies up to your proficiency bonus within 30 feet that same amount each. This feature can restore a creature to no more than half of its hit point maximum. You can’t use this feature on an undead or a construct.

Potent Spellcasting

Starting at 8th level, you add your Wisdom modifier to the damage you deal with any cleric cantrip.

Self-Transfusion

Starting at level 17, you gain the ability to bring yourself back from the brink of death. When you are reduced to 0 hit points but not killed outright, you can consume a use of your Transfusion feature to drop to 1 hit point instead. Additionally, when you reduce a hostile creature to 0 hit points, you regain a use of your Transfusion.