After texts describing the theory and manipulation of soul cores were brought back, the supreme commander on the front lines presented them to the hardliners' ringleader, Mandala.
[LV I] [LV II] [LV III] When This Spirit Attacks
[Crush +2] (Discard a number of cards from the top of your opponent's deck equal to the total of this spirit's level plus any specified modifier.)
[LV II] [LV III] When This Spirit Attacks
[Raid: 1] (Up to the specified number of times per turn, you may exhaust one of your nexuses to refresh this spirit.)