Create a sphere of dark energy that traps and dangles enemies caught in its field.

Singularity
Tier: 1
Prerequisites: none
The sphere captures Class D and Class C enemies for 3 turns. Radius 1 meter Recharge Time 7 turns

Radius
Tier: 2
Prerequisites: Nova
Increase the radius of Nova by 1 meter

Force and Damage
Tier: 3
Prerequisites: Radius
Increase the damage of Nova by 110, in addition, Nova now knocks back Class D enemies and staggers Class C enemies.

Force and Damage 2
Tier: 4
Prerequisites: Force and damage, Cant have Radius 2
Increase damage of Nova by 140, in addition your Nova now knocks back Class C enemies and staggers Class B enemies

Radius 2
Tier: 4
Prerequisites: Force and Damage, Cant have Force and Damage 2
Increase the radius of Nova by an additional meter

Power Recharge
Tier: 5
Prerequisites: Force and Damage 2 or Radius, Cant have Half-Blast
Reduce the Recharge of all powers by 1 turn after using Nova.

Half-Blast
Tier: 5
Prerequisites: Force and Damage 2 or Radius, Cant have Power Recharge
Reduce the damage of Nova by 200, but Nova only drains half of your total Shields.

Pierce
Tier: 6
Prerequisites: Half-Blast or Power Recharge, Cant have Sustain
Nova now Ignores armor.

Sustain
Tier: 6
Prerequisites: Half-Blast or Power Recharge, Cant have Pierce
Nova now has a 33% chance of not Draining your shields.