The attribute (or statistics in DCUO terms) choice for a "Healer" is, as in any other MMO, a trade-off between
Power (mana) regeneration and
Power quantity (for example, in World of Warcraft you have
Vitalization in DCUO terms) and
Power in DCUO terms)).
The attributes to look out for are:
The choice between
Vitalization is a difficult one to make, there have been cases where Priests in World of Warcraft have chosen
Mana (quantity) over
Spirit (mana regeneration) with efficient results (this was before the boilerplate state of World of Warcraft where you cannot experiment anymore).
Plants) is the only offensive spell used as an interrupt as well .
Regenerationis slow to activate, but regenerates both power and health to all party members.
Shapeshifting) is acquired by sacrificing a point to
Gorilla Formbut works great as an emergency heal. It also seems to function well to prevent damage spikes, especially when starting combat.
Shapeshifting) first sets pheromones and then combines with the next skill
Plants) that removes the pheromones. Both of these powers heal but when activated in sequence will heal even more.
Metabolismis an AoE HoT and
Blossomhas instantaneous effects.
Cross Pollinationis also an AoE HoT - perhaps this can be further optimized or exchanged for a
Robot Sidekickiconic power.
The mapping to keys is intentional, for solo,
Savage Growth can help interrupt enemies, followed by
Regeneration and the rest of the skills for healing.
Any weapon that has upgrades based on
Critical Heal Chance,
Critical Healing Magnitude or
Vitalization is a good choice, providing that it is a ranged weapon that will allow you to stay out of combat and accumulate power.
Hand Blaster is a good example. If you look at the skill tree, you will notice that most skills affect healing:
+1% Critical Heal Chance
Permanently Gain: +3 Restoration
Critical Healing Magnitude→
Permanently increase statistics: Boost Critical Healing Magnitude by 4% per point.
Permanently increase statistics: Boost Restoration by +7 per point
Permanently increase statistics: Boost Power by +6 per point
Permanently increase statistics: Boost Vitalization by +2 per point
The tactic is to stay away and shoot randomly at mobs in order to regenerate
Power and then heal.
Three iconic powers are important:
Permanently Gain: +10% Critical Healing Magnitude
Permanently Gain: +3% Critical Healing Chance
Wisdom of Solomon→
Permanently Gain: +50 Vitalization / +100 Power
The only thing that matters when it comes to Combat Rating, is the gear that you have in your possession. It can be acquired through drops, or just bought at a set-vendor. In any case, the gear has to be in your possession (either inventory or bank) but it should not be necessarily worn.
Each piece of equipment is given a different combat rating depending on the slot that it is equipped in. The DC Universe Wiki, hints to the following distribution of Combat Rating multipliers per gear piece:
When shopping or looting, you should pick the gear items in sequence that have the highest Combat Rating multipliers.