This is the total impact on my warlock - currently running in magister but swapping to draconic for U51.

Single Target DPS - 15 second rotation
- Before U51: 68,645.16
- With U51 Changes: 153,459.47
- Math: https://docs.google.com/spreadsheets...it?usp=sharing

*** This requires a 10 second-build up of arcane pulse and the new draconic dot to achieve these #s.

AOE DPS - 30 second rotation
- Before U51: 70,058.92
- After U51: 61,361.36
- Math: https://docs.google.com/spreadsheets...it?usp=sharing

AOE DPS - 15 second rotation
- Before U51: 51,172.65
- After U51: 30,680.68
- Math: https://docs.google.com/spreadsheets...it?usp=sharing

Change to DC (assuming I usually cast on enemies before damage so the removal epic resilience is giving me the full benefit)

Necromancy
- 6 Magister Cores
- 3 Magister Necromancy Specialist
- 3 Magister Master of Necromancy
- 3 Magister Intelligence + Twist of Arcane Hymn from Fatesinger

+3 New Draconic Cores
+3 Draconic Tier 5
+3 Destiny 1 - Tier 3
+6 Effective DC bonus from removal of epic resilience

Net Effect: 0

Enchantment or Illusion (TBD)
- 6 Magister Cores
- 3 Magister Intelligence + Twist of Arcane Hymn from Fatesinger

+3 New Draconic Cores
+3 Draconic Tier 5
+3 Destiny 2 - Tier 3
+6 Effective DC bonus from removal of epic resilience

Net Effect: +6

Evocation
- 6 Magister Cores
- 3 Magister Intelligence + Twist of Arcane Hymn from Fatesinger

+3 New Draconic Cores
+3 Draconic Tier 5
+3 Destiny 3 - Tier 3
+6 Effective DC bonus from removal of epic resilience

Net Effect: +6

Other Schools
- 6 Magister Cores
- 3 Magister Intelligence + Twist of Arcane Hymn from Fatesinger

+3 New Draconic Cores
+3 Draconic Tier 5
+6 Effective DC bonus from removal of epic resilience

Net Effect: +3

Overall Assessment

This will change my playstyle and build decisions as warlock single-target dps is getting a massive boost, but my aoe is taking a significant hit.

The thing I will miss most is the 1-2 punch of arcane tempest + energy burst which is not replaceable due to the epic strike and mantle restrictions with the new epic destiny system. So even if Arcane Tempest exists in another tree it will likely lock out dragon breath as they will be on the same timer.

In general the epic strike and mantle restrictions make dipping into another casting tree less appealing as the best things can't be used.

One way I can make up for the loss of aoe is by relying more on procs with my aoe rotation (tentacles, ice storm, sleet storm). Dripping with magma from legendary red dragonscale armor or docent is the most obvious candidate. In general dripping with magma will continue to push builds toward fire as the dps impact is so significant and it seems broken to me (too good to be working as intended, but I'll take it). Alchemical <element> attunement can also help boost aoe with procs.

I generally dislike playing builds that rely on procs (I played Shiradi for several years) because the #s scrolling take so long to catch up with actual in-game results.

I look forward to the next 3 caster trees and hope there is more low-hanging fruit than I see in the other caster trees.

Epic Feats and Qualifications on Numbers

My current epic destiny feats are epic pact dice, mass frog and arcane pulse. With mass frog going away I will likely take epic force spellpower or epic cold spellpower which boost some of my post-U51 numbers. I am undecided on this so I haven't factored this into the spreadsheet yet. It is likely that dropping epic pact dice will make sense to take both cold and force epic spellpower.

Scion is another problem area for warlocks with these changes since most scions have only one spellpower type boosted with the exception of feywild which boosts both sonic and force and is great for fey builds. I am currently using the shadowfell scion for necro DC and am undecided on whether to switch to feywild for more of a blasting / cc focus. My aoe and single-target dps numbers will improve slightly if I make this change at the cost of 2 necro dc.