Level 1: 1 core, 3000 BP Level 2: 2 core, 4000 BP Level 3: 4 core, 6000 BP
[LV1][LV2][LV3] (Your Attack Step) When your "Investigator" family Spirit attacks, that Spirit gains +3000 BP. After that, if you have 4 or less cards in your hand, draw 1 card from your deck.
[LV1][LV2][LV3] (Your Attack Step) All your "Investigator" family Spirits gain the following effect (When Attacks) This Spirit gains +3000 BP, and if you have 4 or less cards in your hand, draw a card.
[LV2][LV3] (When Attacks) While you control an "Antarc"-named Ultimate/Nexus, opposing effects can't end the Attack Step.