Level 1: 1 core, 8000 BP Level 2: 2 core, 10000 BP Level 3: 4 core, 16000 BP
[LV1][LV2][LV3] "Nova X"-named Spirits you control can't brave (Separate the Brave if already braved), and are unaffected by opposing effects.
Slayer Unleash: 2 [LV2][LV3] Flash - Once per turn, destroy an opposing exhausted Spirit. Or, once per game, you can put two cores from your Red/Purple Grandwalker Nexus(es) to this Spirit. When you've done so, treat this Spirit as colorless, and destroy the Braves on every opposing Spirit/Grandwalker Nexus.