Bujintei Tsukuyomi

The monster effect "Once per turn, you can detach 1 Xyz Material from this card; send your entire hand to the Graveyard, and if you do, draw 2 cards from your Deck" is an Ignition Effect. (This effect does not target. Detaching 1 Xyz Material from this card is a cost to activate this effect.)

The process of "send your entire hand to the Graveyard" and the process of "draw 2 cards from your Deck" are treated as occurring simultaneously.

The monster effect "When this card leaves the field because of an opponent's card: You can target up to the number of Xyz Materials this card had on the field; Special Summon those targets from your Graveyard, which must be Level 4 'Bujin' Beast-Warrior-Type monsters" is a Trigger Effect. (This effect targets a number of Level 4 "Bujin" Beast-Warrior-Type monsters in your Graveyard, up to the number of Xyz Materials "Bujintei Tsukuyomi" had when it left the Monster Zone. This effect can also be activated during the Damage Step.)

You can activate this effect when this face-up card on the field leaves the field due to an opponent's effect.

If a targeted monster is no longer a Beast-Warrior-Type monster at the time the effect "Special Summon those targets from your Graveyard" is resolved, that monster is not Special Summoned.

The monster effect "You can only control 1 face-up 'Bujintei Tsukuyomi'" is an effect that is not classified as an Ignition Effect, Trigger Effect, Quick Effect, or Continuous Effect.