Machina Peacekeeper

Edison Card Text
① When this card on the field is destroyed and sent to the GY: You can add 1 Union monster from your Deck to your hand.
② Once per turn, you can either:
● Target 1 Machine you control; equip this card to that target, OR:
● Unequip and Special Summon this card in Attack Position.
③ If the equipped monster would be destroyed, destroy this card instead.
④ A monster can only be equipped with 1 Union Monster at a time.
Targets
Note: when it becomes an Equip Card
No Damage Step effect
Banlist • Unlimited
Interactions
If the monster equipped with Machina Peacekeeper leaves the field, does Peacekeeper still trigger?✓
The equipped monster is removed from the field by an effect like PWWB.
Yes. Peacekeeper leaves the field at the same time as the equipped monster and can trigger as long as the destruction timing is correct.
If PWWB is activated as CL2 or higher, Machina Peacekeeper will miss timing because its destruction is not the last thing to happen.
Are Union monsters destroyed when the equipped monster leaves the field, and does Peacekeeper trigger?✓
The equipped monster is bounced with Brionac's effect.
Yes. Unions are destroyed by game mechanics when their equipped target leaves, and Peacekeeper can trigger.
Rulings
edisonformat.net
These rulings apply to all Union Monsters: https://edisonformat.net/rules/compendium/union-monsters
edisonformat.com
(1) When this card on the field is destroyed and sent to the Graveyard, you can add 1 Union Monster from your Deck to your hand. (2A) Once per turn, during your Main Phase, you can equip this card to a Machine-Type monster you control as an Equip Card, OR (2B) unequip it to Special Summon this card in face-up Attack Position. ((C) A monster can only be equipped with 1 Union Monster at a time. (3) If the equipped monster would be destroyed, destroy this card instead.)
This (1) optional Trigger Effect CAN miss the timing.
This effect will only activate if the last thing to happen was Peacekeeper's destruction.
You cannot activate this effect if you do not have any Union Monsters remaining in your Deck.
This effect will activate if Peacekeeper is equipped to a monster that gets flipped face-down.
The (2A) Ignition Effect targets a Machine-Type monster you control.
If the target is no longer Machine-Type, Peacekeeper is destroyed by game mechanic.
If the target is flipped face-down / leaves the field, Peacekeeper is destroyed by game mechanic.
If the equipped monster is flipped face-down / leaves the field, Peacekeeper is destroyed by game mechanic immediately.
A Union Monster that is attached to a monster is treated as an Equip Spell Card.
If "Dimensional Fissure" is active when an equipped Union Monster is sent to the Graveyard, it will not be banished, because it was treated as a Spell and not a monster [REF]].
The (2B) Ignition-like Effect is the effect of a Equip Spell Card.
If you have no open Monster Card Zone when this effect resolves, send this card to the Graveyard.
If the equipped monster is flipped face-down / leaves the field before this effect resolves, this card is immediately destroyed and sent to the Graveyard and is not Special Summoned.
You can activate this effect even if your opponent controls the equipped monster.
The (C) Condition applies always. A monster can never be equipped with more than 1 Union Monster.
The (3) Continuous-like Effect is the effect of a Equip Spell Card.
Apply this effect if the equipped monster would be destroyed by battle or card effect.
If an effect (ex: "Black Rose Dragon") would simultaneously destroy Peacekeeper and the equipped Machine-Type monster; destroy both cards, you CANNOT apply this effect [REF]].
This does not apply if the equipped monster would be removed from play, returned to the hand / Deck, or flipped face-down by a card effect.