Okay, so I wanted to post some new warlock invocations. These are rough drafts, so any feedback would be appreciated.
First of all, is Eldritch Cone really a greater invocation? Waiting until 11th level for a cone seems pretty bad. I don't know if it's too much for a lesser invocation (6th level). I guess it does overshadow Eldritch Chain, unless you'd rather make an attack roll instead of force a Ref save. What are your thoughts on this? Depending on what we do with this, it will affect the power level of other blast shape invocations.
Any inovocation flagged (modified) is a modified version of an already-printed invocation.
Blast Shape Invocations
Eldritch Retribution
Least
When someone attacks and successfully damages you with a physical weapon, you may react and attack them with an Eldritch Blast. You apply this invocation to your Eldtritch Blast as an immediate action. You can make an Eldritch Blast attack against the opponent who attacked you. Your attack is resolved after the opponent's. You cannot apply any Eldritch Essense invocations to this blast. The target must be within 5 feet per warlock level, to a maximum of 60 feet.
Eldritch Assault
Lesser
You may make a full attack with your Eldritch Blast this round.
Eldritch Sphere, Lesser
Lesser
You turn your Eldritch Blast into a sphere.
Your Eldritch blast becomes a 10ft radius spread with a range of 60ft. Creatures within this area take normal damage from your Eldritch Blast. A successful reflex save halves this damage.
Eldritch Sphere
Greater
YYou turn your Eldritch Blast into a sphere.
Your Eldritch blast becomes a 20ft radius spread with a range long (400 feet + 40 feet per level). Creatures within this area take normal damage from your Eldritch Blast. A successful reflex save halves this damage.
Eldritch Cone (modified)
Greater
As the normal invocation, except the cone is increased from 30 feet to 60 feet.
Eldritch Essence Invocations
Hellrime Blast (modified)
Lesser
Instead of applying a -2 Dex penalty, Hellrime blast deals 1d3 points of Dex damage to the target. The damage is healed one minute after.
Shocking Blast
Lesser
Your Eldritch Blast deals electricity damage. If attacking a target in metal armor, you gain a +3 bonus to the attack roll, or the target suffers a -3 penalty to his saving throw (if your blast targets an area of effect). In addition, the target becomes entangled for one round.
Other Invocations
Inhuman Toughness
Least
Duration: 1 hour
You gain five temporary hit points, plus five more per three warlock levels (to a max of 35 at 18th level). Note that these temporary hit points overlap with other temporary hit points and do not stack. For example: a 3rd level warlock uses Inuman Toughness to gain 10 temporary hit points, and gets hit for 6 damage, leaving him with 4. If he uses Inhuman Toughness a second time, the 10 temporary hitpoints overlap with his previous 4, giving him a total of 10 temporary hit points, and not 14.
Fiendish Form
Greater
Duration: 24 hours
Your form changes, and you take on fiendish traits.
Your damage reduction warlock class feature becomes cold iron and good or lawful and cold iron.
You gain two claw attacks, which deal 1d6 damage (1d4 for small warlocks and 1d8 for large). You may attack with each claw at your full bonus, but you do not gain iterative attacks with these claws from a high base attack bonus. In addition, you can channel your eldritch blast through each claw attack. While doing so, you cannot apply any Blast Shape invocations.
You gain wings, and can fly at your base speed with average manuverability.