The monsters that can do this are almost exclusively one of the following,
A - monsters that specifically say that's where they activate.
B - monsters with a Quick Effect that can negate the activation of a Spell, Trap or monster effect.
C - monsters with a Quick Effect that modify a monster's ATK or DEF.
No others can be activated, so a monster with a Quick Effect that only destroys a target could not be used.
No part of Zubaba Knight negates effects but since it destroys the monster at the start of the Damage Step it might mean that some monster effects would be unable to activate. Monsters which trigger when destroyed by battle will not activate because they were destroyed by an effect. Many monsters with effects that happen during or after Damage Calculation will never activate because the damage step will end as soon as it starts.
I am fairly sure you cannot activate "Defense Draw" after an opponent's Ancient Gear monster inflicts Battle Damage in order to reduce the damage to 0 and draw a card. Here's why:First of all, this scenario is referring to an effect most Ancient Gear monsters possess: If this card attacks, your opponent cannot activate any Spell or Trap Cards until the end of the Damage Step.In case you did not know, the Damage Step is the part of the Battle Step that consists of (1) the point right before damage is calculated between two monsters, (2) damage being dealt to a monster, (3) dealing any damage to the player's Life Points (LPs), and (4) if any monsters are destroyed, they are sent to the Graveyard."Defense Draw" must activate during that third portion of the Damage Step when you are going to lose LPs. Since this is still during the Damage Step and if you are being attacked by an Ancient Gear monster with the above effect, you cannot activate "Defense Draw".
Because Metalmorph changes the ATK of a monster, it can be activated in the Damage Step. You can therefore do two things. If the defending monster is face-up already, you can activate Metalmorph in response to the attack, that's fine. If the defending monster is face-down, you will flip it at the start of the Damage Step, and can activate Metalmorph as above, before you enter Damage Calculation.
An attacked flip effect monster's effect will activate after damage calculation, but before monsters destroyed by battle go to the graveyard, so it will be after the effect's resolution. Note that even though a monsters considered destroyed by battle will still be on the field at the time, it can't be returned to hand or deck by such effects.
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
When a monster attacks a defense position monster with DEF equal to to the attacking monster's ATK, no damage is inflicted to either player's Life Points and no monsters are destroyed in battle. Some monsters have effects that activate before or after they battle, so you must take those into account as well.
No part of Zubaba Knight negates effects but since it destroys the monster at the start of the Damage Step it might mean that some monster effects would be unable to activate. Monsters which trigger when destroyed by battle will not activate because they were destroyed by an effect. Many monsters with effects that happen during or after Damage Calculation will never activate because the damage step will end as soon as it starts.
I am fairly sure you cannot activate "Defense Draw" after an opponent's Ancient Gear monster inflicts Battle Damage in order to reduce the damage to 0 and draw a card. Here's why:First of all, this scenario is referring to an effect most Ancient Gear monsters possess: If this card attacks, your opponent cannot activate any Spell or Trap Cards until the end of the Damage Step.In case you did not know, the Damage Step is the part of the Battle Step that consists of (1) the point right before damage is calculated between two monsters, (2) damage being dealt to a monster, (3) dealing any damage to the player's Life Points (LPs), and (4) if any monsters are destroyed, they are sent to the Graveyard."Defense Draw" must activate during that third portion of the Damage Step when you are going to lose LPs. Since this is still during the Damage Step and if you are being attacked by an Ancient Gear monster with the above effect, you cannot activate "Defense Draw".
On the turn you activate it, your monsters can't be destroyed by battle, nor do you take any battle damage to your lifepoints.
Because Metalmorph changes the ATK of a monster, it can be activated in the Damage Step. You can therefore do two things. If the defending monster is face-up already, you can activate Metalmorph in response to the attack, that's fine. If the defending monster is face-down, you will flip it at the start of the Damage Step, and can activate Metalmorph as above, before you enter Damage Calculation.
If this card attacks a defense position monster your opponent controls, destroy all defense position monsters your opponent controls after damage calculation. During your end phase, destroy all of your monsters that did not declare an attack this turn.
1 Tuner + 1 or more non-Tuner monsters If this card attacks a Defense Position monster your opponent controls, destroy all Defense Position monsters your opponent controls after damage calculation. During your End Phase, destroy all other monsters you control that did not declare an attack this turn.
The damage from Graverobber is applied when you activate the spell card.
An attacked flip effect monster's effect will activate after damage calculation, but before monsters destroyed by battle go to the graveyard, so it will be after the effect's resolution. Note that even though a monsters considered destroyed by battle will still be on the field at the time, it can't be returned to hand or deck by such effects.
damage
Yes, because it is a quick effect that modifies the ATK of monsters, it can be activated in the Damage Step, before Damage Calculation.