Originally Posted by SkagasmAddict
That's going to depend on whether you've capped your Hit stats and your Haste, but assuming you're Hit/Expertise capped and using a Polearm (3.3 weapon speed = 2.75 charges per crit) and you have even a little haste (~7% to reach a 2 sec attack speed). You only need 36.36% Crit (2/5.5) to expect something close to full up-time between the two buffs.
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Hit and expertise have no bearing on crit chance. You have never had to hit in order to crit. Easy enough to forget, since it defies logic.
So, what I can give you is the minimum amount of crit required by weapon type to ensure 50% uptime on EB, which would result in full coverage in a completely ideal scenario.
Here is the table of EB procs from crits from the main post:
| Weapon Speed | Minimum Charges per crit | Maximum Charges per crit |
| 2.6 (1h) | 1 (50%) | 2 (50%) |
| 3.3 (Staff) | 2 (25%) | 3 (75%) |
| 3.6 (Polearm) | 3 (100%) | |
So, the procs per crit from dual wielding 1h's is 1.5, 2.75 from a staff and 3.0 from a polearm.
Let's assume 20% Haste from gear, which is easily attainable right now.
For 1h's, Swing Speed = Base Weapon Speed / (1.2 Haste * 10% raid buff)
2.6 / (1.2 * 1.1) =
1.97 swing time
Divide by 2 since we're dual wielding, and we have
.98 seconds per auto attack, and 1.5 seconds of EB per crit.
In order to gain full uptime on EB, we would need .98 / 1.5 = 65.7% Crit chance
To gain full uptime on EB and 2pc, we only need half that much crit, so
for Dual-Wielding with 20% Haste, 32.9% Crit Chance in the absolute ideal conditions will result in full uptime of EB and t15 2-pc.
For Staves, Swing Speed = Base Weapon Speed / (1.2 Haste * 1.4 * 10% raid buff)
3.3 / (1.2 * 1.4 * 1.1) =
1.79 swing time
1.79 / 2.75 = 65.1% Crit chance required for full EB uptime
When using a Staff, a minimum of 32.5% Crit chance is required for full uptime of EB and t15 2-pc.
For Polearms, Swing Speed = Base Weapon Speed / (1.2 Haste * 1.4 * 10% raid buff)
3.6 / (1.2 * 1.4 * 1.1) =
1.95 swing time
1.95 / 3 = 65.0% Crit chance required for full EB uptime
When using a Polearm, a minimum of 32.5% Crit chance is required for full uptime of EB and t15 2-pc.
As was established a long time ago, the difference between weapon types is very small, so use whatever is the best available. I just wanted to demonstrate how meaningless the difference between the types is. Now, let's compare 20% Haste with 0% Haste and 10% Haste.
I'll assume Dual Wielding, since I currently am (when Thunderforged fists drop and the Rogue doesn't want them, I guess I'm not 2h anymore):
Starting with 0 Haste, for 1h's, Swing Speed = Base Weapon Speed / (10% raid buff)
2.6 / (1.1) =
2.36 swing time - divide by 2 since it's dual wielding to get a
1.18 sec swing time.
1.18 / 1.5 = 78.7% Crit chance required for full EB uptime
With 0 Haste, a minimum of 39.3% Crit chance is required for full uptime of EB and t15 2-pc.
Trying again with 10% Haste, for 1h's, Swing Speed = Base Weapon Speed / (1.1 Haste * 10% raid buff)
2.6 / (1.1 * 1.1) =
2.15 swing time - divide by 2 since it's dual wielding to get a
1.07 sec swing time.
1.07 / 1.5 = 71.6% Crit chance required for full EB uptime
With 10% Haste, a minimum of 35.8% Crit chance is required for full uptime of EB and t15 2-pc.
Let me put these values into a table so they can be read more quickly:
| Haste % | Crit needed for full coverage of EB/2pc | Percent change from prior breakpoint |
| 0% | 39.3% | N/A |
| 10% | 35.8% | 3.5% |
| 20% | 32.9% | 2.9% |
| 30% | 30.3% | 2.6% |
| 40% | 28.1% | 2.2% |
| 50% | 26.3% | 1.8% |
So, I use the term "breakpoint" very loosely there, but I think we can clearly see that Haste provides a solid increase to the value of crit for EB while also having sharply diminishing returns.
I think this is just more support for my prior argument that Haste is a good stat up to about 8-9k-ish, then its value really fades away.
Anyhow, assuming a reasonably good value of Haste, around 32.5-33% Crit
after suppression is where you should be able to have full uptime on EB and t15 2pc, assuming reasonably favorable RNG and excellence of execution.