Necratog

Players may not rearrange the cards in their graveyards. This is a little-known rule because new cards that care about graveyard order haven’t been printed in years.

Say you’re the owner of both a permanent and an Aura that’s attached to it. If both the permanent and the Aura are destroyed at the same time (by Akroma’s Vengeance, for example), you decide the order they’re put into your graveyard. If just the enchanted permanent is destroyed, it’s put into your graveyard first. Then, after state-based actions are checked, the Aura (which is no longer attached to anything) is put into your graveyard on top of it.

If an effect or rule puts two or more cards into the same graveyard at the same time, the owner of those cards may arrange them in any order.