I have seen in many treads how players think garuda is some kind of super pet only because of contagion and that is the only reason why players are using garuda. But why contagion is that special? Because it will extend your dots 15 seconds? Yah that is nice in the fights with lot of downtime and if dots tick during that downtime. But in the fights where there is 100% uptime or almost 100% uptime all of the time? You will win 50% duration of bio2, 62.5% duration of miasma and 83.33% duration of bio. In that time you can cast 2 more ruins than normal? Have you ever think about it, garuda will lose like one of her auto attack that is doing almost same damage than that ruin? I have seen players that use contagion during spur and rouse in their youtube videos. It is almost same than wasting 2 ruins from your pet in order extend your own dots while, you are winning 2 ruins yourself? In the end you do not win anything with your contagion if you do that(may only save a little mana). Ok important thing of contagion is that you will save mana. 50% of bio2, 62.5% of miasma and 83.33% bio = 80 bio2 + 83 miasma + 88 bio - 79 ruin - 79 ruin = 93 mana saved. That is 35% worth of energy drain = 52.5 worth of potency.
Okey there is few things how you can abuse your contagion utility like using miasma2/poison potion/xpotion/raging strikes
-miasma 2
This ability is really expensive cost 186 mana. Ruin cost 79 mana. It will cost 107 more mana than ruin. If you run out from the mana it is 40% worth of energy drain gain. 40% of energy drain = you will lose 60 potency in order you gain 40 potency more than ruin. In the end not worth use at all
-rs and x pot
Both will give you around 20% damage boost(not sure how much x pot will give 2 you). If your normal dots tick like 430~ with rs up 430 x 20% = 86 with 5 extra ticks is 430 more damage with few crits probably 500~ more damage every 3min. In 3 minute 500 / 180 seconds = 2.7 more dps and with x pots 500 / 270 seconds = 1.85 more dps
-Poison potion
Poison potion will do around 250 damage normaly and with contagion double of that. Normaly 250 / 108 seconds = 2.3 dps with contagion 500 / 120 seconds = 4.17 dps, you will win 1.85 dps
Now after all, what is our total gain of dps from contagion if we ignore our pet damage.
2x ruins 600~ / 60 = 10 dps
from mana gain 200~ / 60 = 3.33 dps
rs + xp pot 2.7 + 1.85
poison pot 1.85
total = 19.73 more dps
If Ifrit can himself do 35 - 40~ dps more than garuda even without dragon kick or slashing debuff, is that contagion really that superior anymore? And ifrit will give you more mobility since you can cast bio lot more often.