Hyper Hammerhead

Edison Card Text
When this monster battles an opponent's monster, if the opponent's monster is not destroyed as a result of the battle, the opponent's monster is returned to its owner's hand at the end of the Damage Step.
Invasion of Chaos • 2007-06-25
No targeting
No Damage Step effect
Banlist • Unlimited
Interactions
What happens if Ally of Justice Catastor battles Hyper Hammerhead?!
Catastor attacks Hammerhead.
Catastor's effect destroys the monster it battles before damage calculation, so Hammerhead does not return it to the hand.
If Hyper Hammerhead is destroyed by battle with Destiny HERO - Plasma, does Hammerhead still return Plasma to the hand?!
Hyper Hammerhead battles Plasma and is destroyed.
Yes. Hammerhead's effect activates in the GY after battle and can still return Plasma to the hand.
Rulings
edisonformat.net
●Hyper Hammerhead's effect activates at the time that a monster would be sent to the GY.
●Even if Hyper Hammerhead was destroyed, its effect resolves.
●The effect of Hyper Hammerhead can be chained to.
●If you have another effect that activates at the end of the Damage Step, you can place it on a chain with Hyper Hammerhead's effect (such as Hyper Hammerhead vs. Hyper Hammerhead).
edisonformat.com
"Hyper Hammerhead"'s effect activates at the time that a monster would be sent to the Graveyard.
Even if "Hyper Hammerhead" was destroyed, its effect resolves.
The effect of "Hyper Hammerhead" can be chained to.
If you have another effect that activates at the end of the Damage Step, you can place it on a chain with "Hyper Hammerhead"'s effect (such as "Hyper Hammerhead" vs. "Hyper Hammerhead").