From Yu-Gi-Oh! Wikia Bujin Emperor - Kagutsuchi - Yu-Gi-Oh! - Yu-Gi-Oh! - Wikia
2 Level 4 Beast-Warrior-Type monsters
When this card is Xyz Summoned: Send the top 5 cards of your Deck to the Graveyard; this card gains 100 ATK for each "Bujin" card sent to the Graveyard to activate this effect. If a Beast-Warrior-Type "Bujin" monster(s) you control would be destroyed by battle or by a card effect, you can detach 1 Xyz Material from this card instead of destroying 1 of those monsters.
This is probably the best of the Bujin support, first to the searchable but situational cold wave and Mikazuchi, but I feel like this was made more for lightsworns. (It takes 2 wulf, or a wulf and a splashable beast-warrior.)
The destruction effect can be used with both. (Judgment dragon can blow up without worry) It can possibly mill all of your hetsukas and murakumos for +. (Happily sends necro gardna, gives extra lights in grave by the truckload)