Obelisk: new defense tower idea

Hello forums! I've had this idea for quite a bit so here it is.

Desc: an ancient relic powered by dark elixir this tower sends out waves of destruction when triggered.

Unlocked at TH 11

appearance: if loaded-black shiny stake like pillar with gold glowing glyphs carved on the side, if not loaded- a plain stone obelisk with plain glyphs carved on the side

number available: 1 (TH 11)

Build time: 7 days

Loading cost ( would load like x bow and inferno tower): 500 DE

build cost: 6000000 Gold

HP: 1750

range: 5 tiles

Attack type: splash- instead of this tower firing projectiles this tower sends a 5 tile magical shock wave that does equal damage to all enemies in range

DPS: 50

Damage per a shot: 85

Number of shots before reload needed: 750

edit 1: this tower would only affect ground troops+damage increase

thanks for reading, tell me what you think. Your opinion is valued by me

This is a great idea, although it seems a little underpowered. The range is very, very little. Also, how much would the stats increase per upgrade? By the way, this should not be able to attack air units, only ground units.

Anybody got any other comments?

TH 11? Not sure about that, don't think we will be seeing that soon. As for the building, as said before a little underpowered. Would the stats increase a lot with an upgrade or will you just increase the general stats?