If your monster is stronger than the opponent's, and theirs is in attack position, then yes. So if your monster was 2400 ATK and the opponent's is 1800ATK, then first, during Damage Calculation, the opponent will take 600 damage to his lifepoints. Then at the end of the damage step, the monster will go to the graveyard and the opponent will be dealt a further 1800 damage from your monster's effect.
If your opponent's monster is in attack mode, then the opponent will take battle damage if you destroy the monster with a stronger one. The amount of battle damage they take is equal to the ATK of your attacker, minus the ATK of the defending monster. If your attacker has 2400ATK for example and the defender's is 1800, then the opponent will take (2400-1800) 600 battle damage. If your opponent's monster is in defence position, then the opponent will not take any battle damage at all, regardless of how much higher your monster's ATK is than the defender's DEF.
The damage is equal to the monster's ATK, with all bonuses and penalties applied.
Yube - The Ultimate Nightmarel's effect destroys any monster it battles with, so will activate both when it attacks, and when it is attacked.
Yes. If your monster is in attack position and you attack a monster that has more attack points than yours, your monster is destroyed and you take Battle Damage to your Life Points equal to the difference between your opponent's monster's Attack Points and your monster's Attack Points.
The ability to inflict 'Piercing Damage' is to be able to deal damage to an opponent when it battles a weaker defence position monster. The amount of damage dealt is the difference between the ATK of the attacker and the DEF of the defender. So for example, if you have a monster which can deal Piercing Damage, and has 1800ATK, and it attacks a defence position monster with 1000DEF, you will deal 800 battle damage to the opposing player (1800-1000).
No, Nutrient Z can only be activated in the Opponent's damage step. You cannot use it in your own turn, so cannot use it if your monster is attacking.
Number 92 Heart-eartH Dragon states that your opponent takes any battle damage that would be dealt to you. So if you attacked their 3000ATK monster, Heart-eartH will not be destroyed, you will take no battle damage, the 3000 that you would take, is dealt to the opponent instead.
When you take control of a monster, that monster is treated no differently to one of your own. So if an opponent has two monsters, and attacks with the stronger one, you can take control of the weaker one with Magical Arm Shield. Damage Calculation will be conducted as normal, the weaker monster will be destroyed and you will take battle damage. Or you could wait until the weaker one attacks, and take control of the stronger one, which the weaker one will be forced to attack. Now it's the opponent who takes the damage.
The following monsters inflict damage to your opponent when destroyed. Some of these effects will depend on whether you or your opponent destroyed it and/or if it was destroyed in battle or by a card effect:AbakiEarthbound Immortal Aslla piscuBalloon LizardMecha-Dog MarronOxygeddon
Exxod Master of the Guard's damage dealing effect triggers when any Earth monster is Flip Summoned (yours or the opponent's) and always deals damage to the opponent, regardless of who controlled the Flip Summoned monster.
Yes. It doesn't matter whose turn it is, Robbin Zombie does not require your monster to be the attacker. So if a weaker opponent's monster attacked your stronger one, the opponent will take battle damage to his life points, and Robbin Zombie will send a card from the top of their deck to the graveyard.
This card cannot be destroyed by battle. You take no Battle Damage from battles involving this card. When this Attack Position card is attacked by your opponent's monster, before damage calculation inflict damage to your opponent equal to that monster's ATK. During your End Phase, Tribute 1 monster or destroy this card. When this card is destroyed, except by its own effect, you can Special Summon 1 "Yubel - Terror Incarnate" from your hand, Deck or Graveyard.