Thundermon

Category:Cost reduction 3
Category:BP 4000 at level 1
Category:BP 6000 at level 2
Category:Return to hand
Category:Add core
Category:Summon from hand
Category:When summoned
Category:When attacks
Category:1 core at level 1
Category:3 cores at level 2
Category:Hi-GO!
Category:Return to own hand
Category:Return spirit