While you have an "Imaginary Beast" family Spirit in your Trash, this set Burst is unaffected by opposing effects.
☼[ Burst: After Your Life Decreases]
You can summon up to three Cost 2/4/6 "Imaginary Beast" family Spirits from your Trash. After that effect resolves, summon this card without paying the cost.
[LV2] For each "Imaginary Beast" Spirit you control, give this Spirit +3000 BP.