Goat format ruling
Granadora

Card effect (current official text)When this monster is Normal Summoned, Flip Summoned or Special Summoned, increase your Life Points by 1000 points. When this card is destroyed and sent to the Graveyard, you take 2000 points of damage.
Rulings
- For the first effect (gaining LP), it is the controller of Granadora who gains. For the second effect (losing LP), it is the owner of Granadora who takes damage.
- When your face-down Granadora is destroyed, you take 2000 damage.
- When your Granadora is destroyed and sent to the GY, you can activate Barrel Behind the Door against the damage.
- When Granadora is destroyed and sent to the GY from the field, your hand, or from your Deck, its effect is activated.
- When Granadora's Summon is negated and it is destroyed, by Solemn Judgment or Horn of Heaven, the owner of Granadora takes the damage.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Goat forum — sourced change requests get reviewed.