[LV1][LV2] (Permanent) Each time a nexus you control would be destroyed, you may move all cores from this spirit to your Trash. In that case, that nexus remains on your Field instead.
The name "Battle Bowl" reminded me of a ball game. However, it turned out to be a fierce game in which a group of players kick unconscious opponents into their goal. -from the 3rd paragraph in chapter Blue of "Record of the Strange World" by Wanderer Lolo"-