Karasu, Luna - Yaban'na karasu bakudan

BYOND Key: IkKaKu_09
Character Name: Karasu, Luna
Character Age: 22
Rank: B-
Creation Points: 8
(IC) Purpose for Jutsu: Luna wishes to create more techniques for her clan to use. She also drew some inspiration from Nuy for this technique. Big explosions were handy to have.
Jutsu Name: Yaban'na karasu bakudan
Intended Rank: A
Jutsu Description: After gathering a large amount of indigo chakra into an orb, the Karasu throws it and causes a big explosion!
Gameplay Description: 80 Power; 80 Speed; 1200 Chakra Cost; +3 Tile Knockback; Stun; 1 Turn Preparation, No preparation time with Shape Training

The user forms a condensed ball of Chakra using their wings to aid in chakra concentration. Once formed, the Karasu can hold the ball of chakra for another turn before throwing it or launch it immediately. Once it collides with something, it explodes violently, damaging everything in a 5x5 area. Depending on where you are upon explosion will result on damage. (Center hit 80 dmg 10 ignoring end, one tile away 70 and 8 ignoring end, 2 tiles away 60 and 6 dmg ignoring) Residue chakra from the technique leaves a dark aura in the area of the explosion, making it somewhat difficult to see through, those who cross through this are subject to Raven's Pressure.

Raven's Pressure -- Those subjected to the dark aura suffer a -2 Tile Movement and a -8 to Physical stats for as long as they're within the dark aura.
*Members of the Karasu clan are not effected by Raven's Pressure.
**The Aura can be blown away with a B rank wind technique or Tempest.
Perk Requirements: Karasu Clan

3x3, anything else is too op.
Raven's pressure is fine, and can be blown away with either b-ranked wind jutsus or tempest.

C-can it be 5x5? That's 1 up from 3x3 ;w;
If not, suppose I'll be alright.

if u raise cost or prep time

1200 chakra cost sound fair?