Thanks, Otou, I'll add that in a bit.
You mentioning the Blade/Wind Lord switch made me recheck
Recklessness on the Wind Lord encounter and it seems to have been changed. The 300% bonus damage from normal difficulty seems to have been replaced by a stacking +50% damage done/33% damage taken debuff with unlimited duration (
Encounter details) which most likely drops Death Siphon as an option for that fight (for survival only, not damage; see below).
The heroic debuff is still there though, at 600% bonus damage taken. So I wondered if Death Siphon is even still worth it compared to Death Strike or Heart Strike just for the damage and here is what I found:
Assumptions: 120k AP (which is probably on the lower end),
[Starshatter] as our weapon (average damage range is 15070), Weakened Armor for a 32% damage reduction from boss armor, Curse of Elements (+5% spell damage) and Physical Vulnerability (+4% physical damage).
Death Strike:
(((120000/14)*3.3 + 15070)* 2.8 + 2094)*0.68 * 1.04 =
87332 damage for 2 Runes
43355,71428571429
Heart Strike:
(((120000/14)*3.3 + 15070)* 1.15 *1.3 + 681)*0.68 * 1.04 = 46320 damage for 1 Rune,
92640 damage for 2 Runes
Death Siphon:
(120000 * 0.4 + 4985)*1.05 = 55634 damage per Rune,
111268 damage for 2 Runes
Normalized to Death Strike at 100% and 2 Runes, we get:
Death Strike: 100%
Heart Strike: 106%
Death Siphon: 127%
For AP breaking points:
- You need 55870 AP for 2xDeath Siphon to do the same damage as 1xDeath Strike with a T14 normal weapon
- You need 65463 AP for 1xDeath Siphon to do the same damage as 1xHeart Strike with a T14 normal weapon
So for heroic with the 600% damage taken debuff it is clear that Death Siphon is ideal to not only keep you up but also do the highest possible damage during his vulnerability phases. One Death Siphon alone will do ~390k healing which should easily keep you alive.
I am actually more worried about Death Siphon eclipsing Heart Strike with a T14N weapon at pretty much base values (65k AP is nothing since you have like 30-40k without any Vengeance). In my opinion, Death Siphon should have remained inbetween Heart Strike and Death Strike in terms of damage for the whole trading-survival-for-damage thing to make sense.
Death Siphon just makes Heart Strike look bad now that the latter got nerfed.