Edison format ruling
Ancient Crimson Ape

Card effect (current official text)When a monster(s) you control is destroyed and sent to the Graveyard, gain 1000 Life Points.
Rulings
(1) When a monster(s) you control is destroyed and sent to the GY, gain 1000 Life Points.
- The (1) mandatory Trigger Effect activates & resolves on the field.
- If "Ancient Crimson Ape" is destroyed and sent to the GY, its effect does not activate.
- If you control your opponent’s monster and it is destroyed and sent to the GY, the effect of "Ancient Crimson Ape" activates.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.