Level Up (A5E) Warlock questions, Eldritch Evolution, Eldritch Prism

[Marcus Lindberg]

Does anyone know the answer to these questions?

1) When picking an invocation using the "Eldritch Evolution" must you fulfill the invocation Prerequisite?

Eldritch Evolution
At 6th level, you gain a bonus invocation—one
which represents your growth in the lethal lore
behind Eldritch Blast. Choose one invocation from
the following list: Agonizing Blast, Eldritch Bind,
Eldritch Elementalism, Eldritch Grasp, Eldritch Prism,
Eldritch Riposte, Eldritch Severance, Eldritch Spear,
Eldritch Squall, Eldritch Tentacle, Repelling Blast,
Versatile Blast.
You gain another bonus invocation in this way at
12th level and again at 18th level. When you gain a
level in this class, you can choose one of the bonus
invocations you know and replace it with another
bonus invocation from this list that you could learn
at that level.

2) When using "Eldritch Prism" and you also posses the Eldritch Ray version can you as an action unleash the "Eldritch Prism" area effect and use Eldritch Ray as "your Eldritch blast" and use the "extra blast" class feature to blast extra rays?

3) What is the area of the "Eldritch Prism" 20 feet diameter cube sounds strange

Eldritch Prism
Prerequisite: 7th level, Eldritch Disturbance feature
You can use an action to unleash your Eldritch
Blast against creatures within a 20-foot diameter
cube originating at a point within 60 feet. Each
creature in the area makes a Wisdom saving throw,
taking force damage equal to 1d10 × your proficiency
bonus on a failure, or half damage on a success.
Once you use this feature, you cannot do so again
until you finish a short or long rest. You also regain
the use of this feature after you’ve spent 5 spell points
to cast a spell or use other features.

Extra Blast
Beginning at 5th level, your Eldritch Blast becomes
more vicious. When you use Eldritch Ray, Eldritch
Scythe, or Eldritch Whip as part of your action on
your turn, as long as you make no weapon attacks
you can attack twice instead of once. At 11th level
you can make three attacks, and at 17th level you
can make four attacks.
In addition, your Eldritch Disturbance’s damage
increases by 1d10 at 5th level, and again at 11th
level and 17th level (to a maximum of 4d10).
These improvements are based on your warlock
level, not your character level. This feature otherwise
counts as Extra Attack (for the purpose of
qualifying for feats, spell effects, and the like).

 

[lichmaster]

Does anyone know the answer to these questions?

1) When picking an invocation using the "Eldritch Evolution" must you fulfill the invocation Prerequisite?

I'd say the answer is yes, and is implied by the following: "When you gain a level in this class, you can choose one of the bonus invocations you know and replace it with another bonus invocation from this list that you could learn at that level"

2) When using "Eldritch Prism" and you also posses the Eldritch Ray version can you as an action unleash the "Eldritch Prism" area effect and use Eldritch Ray as "your Eldritch blast" and use the "extra blast" class feature to blast extra rays?

I'd say no: "You can use an action to unleash your Eldritch Blast against creatures within a 20-foot diameter cube originating at a point within 60 feet"
Eldritch prism is an action on its own.

3) What is the area of the "Eldritch Prism" 20 feet diameter cube sounds strange

That's probably a typo. Either a 20 ft cube or 20ft diameter sphere would work. Wouldn't make a massive difference, although the cube will actually get a larger volume

 

[Tessarael]

On a related note, I believe the spellcasting ability modifier bonus to damage when you have Agonizing Blast also applies to Eldritch Prism, Eldritch Riposte, Eldritch Severance, and Eldritch Squall, as they all use one of the Eldritch Blast variants.