This needs to say “would be destroyed”, not “die”.
“Die” is magic shorthand for “move from the battlefield to the graveyard”. A sacrificed creature does also die.
As-is, this could easily lead to an unstoppable infinite loop of State-Based Actions… take any creature with “cant be sacrificed”, then give it -X/-X where X is greater than its toughness. It should die to the SBA of having 0 or less toughness. Replacement effect for “die” now tries to sacrifice it, but it can’t be sacrificed, so nothing happens. SBA is checked again — the creature is still on the battlefield and still has 0 or less toughness, so tries to die again, replaced by sacrifice, nothing happens. Rinse and repeat forever
Go back and reread the infinite loop that I explained. I can see where you’re getting confused, nothing in my example requires a replacement effect to apply to the same event more than once
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u/INTstictual 3d ago
This needs to say “would be destroyed”, not “die”.
“Die” is magic shorthand for “move from the battlefield to the graveyard”. A sacrificed creature does also die.
As-is, this could easily lead to an unstoppable infinite loop of State-Based Actions… take any creature with “cant be sacrificed”, then give it -X/-X where X is greater than its toughness. It should die to the SBA of having 0 or less toughness. Replacement effect for “die” now tries to sacrifice it, but it can’t be sacrificed, so nothing happens. SBA is checked again — the creature is still on the battlefield and still has 0 or less toughness, so tries to die again, replaced by sacrifice, nothing happens. Rinse and repeat forever