We have known how to DPS calculation formulas for Abilities in Aedric Spear and Dawn's Wrath. This news analyzes how to calculate the DPS of Templar's abilities in Restoring Light. You first know the expression of the damage calculation formula as follows:
                            _X + _Y

X-- Max Magicka         Y-- spell damage

Rite of Passage
The Calculation formula: 0.06X + 1.25Y (= DPS per 0.5 second)

Since the game was updated, Rite of Passage has been enhanced in healing. It can make you gain immunity from all enemy control effects. Therefore, it is necessary for you to fight in PVP as well as in PVE.

The advanced abilities: Practiced Incantation and Remembrance
Practiced Incantation-- It increases channel duration, which can restore a large amount of Health for allies.
Remembrance-- It makes allies take 20% less damage while it is active.
I’d like to choose Practiced Incantation. For example, my Templar is able to restore Health by 600 per second. Practiced Incantation allows me to have two more second to heal. This is, I add 1200 Health to restore.

Rushed Ceremony
The Calculation formula: 0.15X + 3.1Y
Magicka cost at the full level: 476

The reason why ESO Templar Healer is irreplaceable is the healing ability, Rush Ceremony. It can instantly Heal two allies. With passive ability, the ability restores full Health in 2 seconds. Although it costs much Magicka, its healing capability is far stronger than the abilities in Restoration Staff.

The advanced abilities: Honor the Dead and Breath of Life
Honor the Dead-- It restores Magicka when healing a target below 50% of Health for 8 seconds
Breath of Life—It heals up to 3 targets. In my opinion, the advanced ability is useful for 4-man group.

Healing Ritual
The Calculation formula: 0.12X + 2.5Y
Magicka cost at the full level: 392

Healing Ritual is AOE with low Magicka cost. It is a good healing ability. Both of Healing Ritual and Restoration Staff have their merits. In some cases, the ability has a powerful effect.

The advanced abilities: Lingering Ritual and Ritual of Rebirth
Lingering Ritual-- It heals allies and self for an additional by 30%. It has additional healing after.
Ritual of Rebirth-- It heals allies and self for an additional by 30%. It has reduced cast time.

Restoring Aura
Magicka cost at the full level: 364

When slotted, Restoring Aura can add Stamina and Health regeneration by 15%. When activated, it increases health and Stamina regeneration for allies by additional 80% for 6 seconds.

The advanced abilities: Radiant Aura and Repentance
Repentance -- With no Magicka cost, Radiant Aura can consume essence of corpses within 10 meters to restore Stamina and Health. Thus, it is a strong ability to level up.
Radiant Aura-- It increased radius. Therefore, the ability can heal allies in the vast range. It is useful in battlefield.

Cleansing Ritual
Magicka cost at the full level: 392

As the first attack, the ability can remove self Debuff and heal allies in the effect area. All allies can launch collaborative spell to cancel Debuff and gain healing. More importantly, Cleansing Ritual is capable of triggering passive abilities, which makes Templar add 30% of healing in the effect range. In all, the ability is useful in PVP and PVE.

The advanced abilities: Purifying Ritual and Extended Ritual
Purifying Ritual-- It reduces Magicka cost and removes five more Debuff for self. It is good attack ability for Templar.
Extended Ritual-- It increases duration.

Rune Focus
Magicka cost at the full level: 196

At first glance, the effect is very good: +1250 resistance. But its effect range is limited, which make the ability greatly lose flexibility and mobility. If Tank doesn’t move to avoid in fights, Rune Focus can heal.

The advanced abilities: Channeled Focus and Restoring Focus
Channeled Focus-- It restore Magicka while in the focus; the amount of restoring Magicka is small: restore 200~300 every ten second. It is not meaningful.
Restoring Focus-- It receive more healing while in focus.