On the Healing Gauge, every 60 seconds, a White Lily blooms, which an be spent on Afflatus Purgation. This works like Polyglots on Black Mage (i.e. after one generates, the cooldown for the next has already begun even before you cast Afflatus Purgation)
New Gauge: The Retribution Gauge. Each casts of Banish or Ablution raises Retribution by 1 level. At level 4, enhances the Holy III spell.
Spells- Glare III - 165 potency
- Afflatus Misery - 660 potency
- Afflatus Purgation - 480 potency.
- Dia - 120 potency. Inflicts 4 stacks of "Dia" as a debuff on the target (no duration). When casting Banish or Ablution on the target, consumes 1 stack to deal an additional 200 potency damage. (920 total potency)
- Banish - 300 potency. No MP cost. Has a 20 second cooldown on the GCD with 2 charges. Shares a recast with Ablution. When Banish is cast, you can immediately cast a free Banish or Ablution again regardless of the cooldown (think Ogi Namikiri from Samurai).
- Ablution - 300 potency. Heals self and nearby party members with a potency of 250. 800 MP cost. Has a 20 second cooldown on the GCD with 2 charges. Shares a recast with Banish. When Ablution is cast, you can immediately cast a free Banish or Ablution again regardless of the cooldown.
- Holy III - 120 potency + 4 second stun. When at level 4 Retribution, increases to 360 potency, is instant cast, and turns Glare III into a 2 action combo of Ruach into Eschaton (Think Verflare/Verholy > Scorch). This "Combo" cannot be interrupted by casting other spells.
- Ruach - 180 potency + 180 potency DoT over 15 seconds (1080 total potency)(Although this is a DoT, it's not an uptime DoT. Think Circle of Scorn from Paladin).
- Eschaton - 480 potency.
2 Minute Potential- Dia - 3 casts = 2760 potency
- Banish/Ablution - 12 casts = 3600 potency
- Holy III - 3 casts = 1080 potency
- Ruach - 3 casts = 3240 potency
- Eschaton - 3 casts = 1230 potency
- Afflatus Purgation - 2 casts = 960 potency
Total Non-Glare Potency Potential: 26 casts = 12870 potency
Remaining Glare III Casts: 22 casts = 3630 potency
Total Possible Potency in 2 Minutes = 16500 potency
Non-Glare Contribution: 78%
Remaining Glare Contribution: 22%
Value per Glare III: 1%
Theorycraft Summary
I know it's a lot more information because it's very new, but it's a lot more simple than it seems. Basically, Banish and Ablution share a cooldown and both do light burst damage in two casts. One costs no MP, the other heals. They have a 20 second cooldown with 2 charges, and you just want to apply Dia before you cast those. When you do so is quite flexible.
Every 40ish seconds (once you've cast 4 Banishes/Ablutions) you'll hit Retribution level 4, cast Holy III, followed by a double up of Ruach/Eschaton, which are just bonus actions that replace Glare after Holy III. This cannot be interrupted unlike with Red Mage, though, so if you need to heal around that time, you can. Lastly, you can toss in an Afflatus Purgation once a minute. It's probably not perfect. As I said, I really just tried to roll with what came to mind at first just to establish this as quickly as possible, but maybe it could be a starting point for a more well-fleshed out idea.