Rocket Warrior's Effect:
This effect is only active during the Battle Phase of your turn. Battle Damage to this card and this card's controller that they take from a battle involving this card becomes 0. After damage calculation, decrease the ATK of the monster that was attacked by this card by 500 points until the end of this turn.
I'm assuming that you're talking about the 2nd part of the effect, in which case the answer is - after. The effect is to lower the attack of a monster after rocket warrior has attacked it and in doing so rocket warrior and his controller take no damage. If rocket warrior destroys the monster in the attack, the second effect is moot.
The effect was all the men died!
How did the battle of Cannae affect the Roman empire
Their last offensive.
EFFECT CAUSE Sally failed the test / beacause she didn't study.
Some 3,000 Native American warriors wiped out about 225 members of the U.S. Seventh Cavalry. The long term effect of that battle led to the massacre of Indigenous women, children and elderly at Wounded Knee, SD in 1890, virtually bringing to a close the Indian wars that raged across America since the arrival of Columbus in 1492.
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.
Gladiator Beasts have to fulfill two criteria before they can use their 'tag in' effect. The battle must have reached the Damage Step (so they cannot trigger if the attack target was destroyed before that) and the Gladiator Beast monster must survive the battle.
Yes, Stardust Dragon can activate its negation Quick Effect in the Battle Phase, and even the Damage Step.
During Damage Calculation is the optimum time to activate Honest. By asking 'damage calculation', they want to make it clear that the battle phase has progressed to that stage, rather than still being in the step before it, in which multiple chains can be activated and Honest's boost may not be used to full effect.
Yes, it does. When a Flip Effect monster is attacked, in the Damage Step you flip it, then calculate Damage, and then apply the flip effect before sending destroyed by battle monsters to the graveyard. So even if Man-Eater Bug was considered destroyed by battle, it will still be able to destroy one monster on the field.
The only time the ATKs matter is during Damage Calculation itself. Galahad's ATK changes before Damage is calculated - the ATK decrease will be applied before the ATKs are compared. So if it decreases his ATK enough so it's lower than the attacking monster, Galahad will be destroyed by battle, the attacker will be ok.
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.
On the turn you activate it, your monsters can't be destroyed by battle, nor do you take any battle damage to your lifepoints.
It must survive a battle that reached Damage Calculation. If the Gladiator Beast monster is destroyed by battle, or survived it but is flipped face down or removed from the field before the end of the battle phase, then it cannot trigger its effect. Also, if the attack never reaches Damage Calculation (such as an attacker attacking the Gladiator Beast being flipped face-down by Book of Moon) then it can't trigger in that situation either.
When two monsters battle, both monsters must remain on the field, for Damage Calculation to occur. If a monster leaves the field before Damage Calculation, then that particular battle step ends.If Zubaba Knight attacks a face-up defense positon monster, that monster is destroyed at the beginning of the Damage Step. The battle step ends there, no damage calculation occurs, no damage is dealt to either player, and Zubaba Knight may not declare another attack (unless if a card effect permits).
It must 'battle' for it to be able to trigger its effect. If it made a direct attack, even though Damage Calculation is conducted, it didn't 'battle' so cannot trigger.
Forbidden Chalice will negate Marshamallon's 'cannot be destroyed by battle' effect. Because Forbidden Chalice changes the ATK of a monster, it can be used in the Damage Step, after Marshmallon is flipped by an attack. If you did this, you will not take the 1000 damage from Marshmallon either - his damage dealing effect activates after Damage Calculation, but will be negated.