While you have a "Dark Snake" family Spirit in your Trash, this set Burst is unaffected by opposing effects.
☼[Burst: After your Spirit is destroyed by the opponent.] Send three cores from an opposing Spirit to the Reserve. After this effect resolves, summon this card without paying the cost.
[LV2][LV3] (When Attacks) Send one core from any opposing Spirit(s) to the Reserve.