Now that i have your attention hear me out. I play Eldar only and I really like how the psychic phase is turning out. But I hear many players scream and shout as they fear that an all psychic army will be the new deathstar. It won't and here is the reason why:
What we already know about the psychic phase:
It's between movement and shooting.
The acting player rolls a D6. Both players get the D6+mastery levels in their armies as power dice.
To cast a power you need as many 4+ as the power has warpcharges.
You can deny the witch on any power, even blessings. DtW is a 6+ and can be modified to a better roll.
You can use as many dice as you want to cast or deny.
Perils of the Warp is on any double 6 you roll. Malefic powers suffer a peril on any doubles. DtW can't peril.
Peril result is a D6 table with potentially devastating results.
Chances to succesfully cast a warpcharge 1 power:
1 dice: 50%
2 dice: 75%
3 dice: 87.5 %
4 dice: 93.75%
Chances to succesfully cast a warpcharge 2 power:
2 dice: 25%
3 dice: 50%
4 dice: 68%
5 dice: 81.25%
Examples:
1 masterylevel: D6+1 power dice. Average of 4.5 dice.
4.5 dice per warpcharge.
-> good chance to cast the one power.
3 masterylevels: D6+3 power dice. Average of 6.5 dice.
2.167 dice per warpcharge.
-> above average chance to cast powers.
5 masterylevels: D6+5 power dice. Average of 8.5 dice.
= 1.7 dice per warpcharge
-> You won’t be able to cast several powers.
10 masterylevels: D6+10 dice. Average of 13.5 dice.
= 1.35 dice per power.
-> You may successfully cast just over half your powers.
The more psykers you have, the less chance you'll have to cast all the powers. More psykers gives you a dimnishing return on dice per power. You will have more dice to throw at some few powers, but you will only cast a fraction of what you could before. And with more dice used, there’s a very high chance of perils too.
In 6th if you are able to succesfully cast most powers, even with 10 psykers in your army.
I really like the change. It means balanced armies with one or two psykers have a good chance to cast their powers. Psychic heavy armies won't be able to spam their powers, but have a high chance to succeed those they choose to cast. Very nicely done.
Deny the witch seems to be stronger too. You can throw all your dice at the one power you really want to stop and have a reasonably good chance to do it.
We still don't know everything yet. Things like shadows of the warp, runes of warding, ghosthelm, spell familiar and more are still unknown. But so long the new 7th shapes up to be a very fun edition!