Create or Detonate Astral Engine (Astral Blight Defined)

Create or Detonate an Astral Engine.
After an Engine is created it can be used to power a multitude of items (basically anything mechanical) this includes constructs.

If user is a Warforged or Anything that has a pre-existing engine that is Infernal/Fey/Astral/Advanced it can turn your own engine into an Astral Engine. The user after this can detonate the engine at will doing 16d12 force damage.

(ONLY USE THIS AS A LAST RESORT OPTION)

The AoE damage has advantage at 15ft or closer and disadvantage at 35ft from the target. If the caster is within 10ft of the engine they auto fail the saving throw but take half damage unless they are casting the spell on themselves then they take full damage.

Astral Blight.
Astral blight is a seepage of the astral into the material plane of origin however it is not a direct offspring of the astral its is a melding of the two planes into one. When this curse is applied it cannot be destroyed by Normal Dispel Curse. The source of the infection must be destroyed however the blight is living and will call upon infected beings to defend the cursed heart. Nothing except a true god can resist the curse. Dc15 Con save for every 10 days inside. If infected there are 5 stages (Dm's Discretion). Plants automatically fail the throw and become blighted and start spreading the plague though spores and water. Any creature who drinks this water or breathe in the spores become tainted and can infect other beings. If an living being consumes the meat of a tainted creature it will become blighted.