Goat format ruling
Nobleman-Eater Bug

Card effect (current official text)FLIP: Destroy 2 monsters on the field.
Rulings
- If you activate the effect of Nobleman-Eater Bug and select 2 monsters, then Ring of Destruction is chained and destroys 1 of the selected monsters, you still destroy the remaining monster when Nobleman-Eater Bug’s effect resolves.
- If Nobleman-Eater Bug is the only monster on the field and it is flipped face-up, then it destroys itself with its effect.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Goat forum — sourced change requests get reviewed.