BSS03-097 Cthulou Shark

Ability / Effect
As an additional summoning cost, you must destroy one of your blue nexuses.
[LV1-LV2-LV3]When Summoned
Destroy all spirits without a CORE(soul core) on them.

[LV3]While This Spirit Attacks
When this spirit destroys one of your opponent's spirits via comparing BP, select a nexus card in your trash and place it without paying its cost.