You could also go Cleric>Cleric>Cleric>Dievdirbys>Dievdirbys>Miko>Kabbalist>Kabbalist.
http://www.tosbase.com/tools/skill-simulator/build/v6706dp1pu/
This support build would allow you to focus on most support skills that Priests don’t have/can’t be scrolled. Kabbalist C2 can be a real beast if you dont take the attribute of Ein Sof that regenerates SP, since you can just run around ± permanently with 3x HP. This makes it an excellent combo with Guardian Saint buff, since you can take the damage for someone easily if you’ve got around 120-150k HP[this makes every of your heal tiles(16 or 17 per heal) recover around 6-8k HP!!!].
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Also, Reduce level provides a great help due to reducing the level of an enemy since every level difference between your target and you decreases the effective attack of a monster by 2,3%. If you can get around 15 level reduction, that would be 1/3 damage shaved off just by that, with the possibility of even greater reduction later on if larger numbers can be calculated. Merkaba can help a lot with tanking due to the fact that it draws aggro, provides mdef buff, damage negation and holy property.
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Cleric also features Fade, which can be used to evade getting targeted + erase all the threat/aggro you + nearby party members created on the enemy. This should a a must-max skill for every support Cleric, especially if you want to buff/debuff/etc., since you can do everything while still in Fade until you attack. With 32 seconds lasting time [lvl 11 with Divine Might] and 32 seconds CD time[80% of 40 seconds] in the AoE of the Laima Statue, the skill is practically permanent.
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Cure can be taken at level 1 or skipped, since Miko features Omamori crafting and Gohei to remove debuffs with many charges and low CD. Besides that, the damage by Cure is simply overshadowed by Heal, and since Cure can’t hit flying enemies (like Heal) it feels pretty useless to spend points into.
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Miko can make use of Kagura Dance while in Fade, providing a nice buff to the melee attackers of a party; the skill Houki Broom can be (partly) exchanged for Hamaya for more damage if necessary
Notice that you can just take Notarikon and Gemmatria at lvl 1 and save the remaining points for maxing Ein Sof at Kabbalist C3, possibly enabling you to max out the new skills introduced with Kabbalist C3.
Also notice that many buffs of Priest can be bought for a few bucks scrolled, making several circles spent on Priest feel wasted for only Revive/Ressurection/Mass Heal/Stone Skin.
The main problem of support classes right now is that they require at least 2-3 circles to become effective (except the hidden ones), so while we are still at the lower half of the game, building a character with multiple of them is currently simply impossible without having to sacrifice alot.
People with Priest, at least in my opinion, should not take Dievdirbys, because the classes need 2-3 circles [meaning that on top of your 2-3 circles of Cleric] to be effective supporters, which eats up ± all of your ranks. Because Diev and Priest are Rank 2 and 3 classes respectively, their buffs are good but quite weak in comparison to R 6-8 classes, which is why I propose not to mix them together. It might be good later on once we reach R 10 or R 12 [details=meh] (whatever the maximum is; however, R 12 seems to be far more likely, since there are so many concepted classes not introduced yet, probably featured in ranks 9 {and maybe 10} respectively It’s stated that 80 classes are planned for the game when it goes out of OBT, the currently released classes being 63 while 68 are disclosed/featured on TOSFanbase. This would mean R 9 will release at least another 2 classes for every base class{+ another 4 hidden classes}, meaning the minimum max Rank would be 11 [if these were to have 3 Circles as well].
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