Laelia, the Blade Reforge's last ability triggers twice when a single spell or ability exiles from both library and graveyard

[DominionSpy]

[[Laelia, the Blade Reforged]]'s third ability reads:

Whenever one or more cards are put into exile from your library and/or your graveyard, put a +1/+1 counter on Laelia.

According to the rulings, this should only trigger once if a spell or ability exiles cards from the library and graveyard:

The last ability only triggers once for each time cards are put into exile from your library and/or graveyard, no matter how many cards were exiled at the same time.

Currently this is triggering twice.

Steps to Reproduce Setup:

• A nonland card should be in your graveyard
• The same card should also be in your library
• Laelia, the Blade Reforged should be on your battlefield
• Cranial Extraction should be in your hand Steps:
• Cast Cranial Extraction targeting yourself and choose the nonland card name
• Exile the copy in the graveyard and the copy in your library
• Observe that two copies of the Laelia trigger are put onto the stack

A similar issue also affects a new MKM card [[Kaya, Spirits' Justice]].

[github-actions[bot]]

Laelia, the Blade Reforged - (Gatherer) (Scryfall) (EDHREC)

{2}{R} Legendary Creature — Spirit Warrior 2/2 Haste Whenever Laelia, the Blade Reforged attacks, exile the top card of your library. You may play that card this turn. Whenever one or more cards are put into exile from your library and/or your graveyard, put a +1/+1 counter on Laelia.

[github-actions[bot]]

Kaya, Spirits' Justice - (Gatherer) (Scryfall) (EDHREC)

{2}{W}{B} Legendary Planeswalker — Kaya 3 Whenever one or more creatures you control and/or creature cards in your graveyard are put into exile, you may choose a creature card from among them. Until end of turn, target token you control becomes a copy of it, except it has flying. +2: Surveil 2, then exile a card from a graveyard. +1: Create a 1/1 white and black Spirit creature token with flying. −2: Exile target creature you control. For each other player, exile up to one target creature that player controls.

[xenohedron]

can presumably be fixed by using new ZONE_CHANGE_BATCH (see #11895)

(Kaya, Spirit's Justice already implemented using that)