While you have an "Ancient Dragon" family Spirit in your Trash, this set Burst is unaffected by opposing effects.
☼[ Burst: After An Opposing Spirit/Ultimate Attacks]
Summon this card without paying the cost. Then, draw a card and, during this turn, your "Ancient Dragon" family Spirits gain +5000 BP.
[LV2] (Your Attack Step) When your "Ancient Dragon" family Spirit attacks, destroy an opposing Spirit with BP equal or inferior to the attacking Spirit's.