When a Beast-Warrior-Type "Bujin" monster(s) you control is destroyed by battle or by card effect and sent to the Graveyard: You can Special Summon this card from your hand. Once per turn, during the End Phase, if a "Bujin" monster(s) was sent from your hand to your Graveyard this turn while you controlled this face-up card: You can add 1 "Bujin" Spell/Trap Card from your Deck to your hand. You can only control 1 "Bujin Mikazuchi".
You can special summon Bujin Mikazuchi when any of these monsters on your side of the field is destroyed. You can even use Bujin Yamato to search out Mikazuchi during the End Phase. Bujin Mikazuchi will can also be special summoned when another Mikazuchi on your field is destroyed.
A Bujin monster must have been sent from hand to graveyard to trigger Bujin Mikazuchi’s search effect. You can do this with Bujin Yamato and Bujin Hirume’s effect or you could use these Bujingi monster’s with inherent effects that discard themselves.