Yes, De-Fusion is Quickplay so you can attack with the Fusion Monster, then use De-Fusion on it, and since it's still the battle phase, the newly summoned components can attack too.
Assuming the defending monster is also in attack position, both monsters will be destroyed.
Yes, but you have to attack one at a time. Now if your talking about attack one monster with all your monsters the answer is no.
When a potential attack target appears or disappears, a 'replay' is caused. The attacking monster may continue its attack, against a new target if it wishes. Or it may discontinue its attack and forfeit attacking for that turn.
In a sense, yes. You attack once per monster. But if one of those monsters was just summoned that same turn, then you cannot attack with it due to summoning sickness which lasts for one turn after summon.
ah, my specialty. Well, that depends. Does your opponent use compulsory evacuation device (i think) when you attack them? Because then the attack is negated. If a player controls one monster, and this monster can't be selected as an attack target, then you may attack directly. So one situation will be if the player has Umi and The Legendary Fisherman, or Guardian Kay'est. These can be ignored, and a direct attack can be made. However - this does not apply if the one monster is an Earthbound Immortal. If a player only controls one monster, and this is an Earthbound Immortal, then he cannot be attacked in the same way, the monster cannot be bypassed, monsters will simply be unable to attack. This is a specifically ruled difference, though without explanation from Konami. If the player controls two unattackable monsters, then again, player and monsters are safe from being attacked. No attacks can be declared against any of them unless circumstances change.
Yes, because it is a quickplay and can be activated during the battle phase.
Of course not. You cannot declare an attack on the opponent's lifepoints if they have a monster, unless one of your monsters has an effect that allows it to attack directly.You'll just have to deal with their monster using Spells or Traps, a monster effect, or by boosting the ATK of one of your monsters.
They 'can' attack directly, meaning they are free to attack the opponent's monsters instead if you wish.
Assuming the defending monster is also in attack position, both monsters will be destroyed.
Yes, but you have to attack one at a time. Now if your talking about attack one monster with all your monsters the answer is no.
Ra's attack and defence is equal to the combined attack and defence of the monsters tributed for its summon. You can also tribute other monsters to increase Ra's attack and defence by that monster. When Ra is summoned from the graveyard (monster reborn etc.) it has 0 attack and defence as no monsters were tributed for it
Patrician of Darkness only allows you to choose the target monster of your opponent's attack. It does not make you attack another monster on your field.If you have multiple monsters on the field in addition to Patrician of Darkness, you can choose which of your monsters that your opponent must target when he or she attacks.
Yes, two Malefic monsters can attack on the same turn, but this is a rare situation considering all Malefic monsters state, There can only be 1 face-up "Malefic" monster on the field, and a couple also say, Other monsters you control cannot declare an attack.However, if you were to somehow attack with one Malefic monster, remove it from the field, and summon another one, the second Malefic monster will be able to attack.
If you're talking about monster zone 'columns', then these have nothing to do with attack declarations. A monster on one player's side of the field is able to attack the monsters on the opponent's field, regardless of which column they are in.
When a potential attack target appears or disappears, a 'replay' is caused. The attacking monster may continue its attack, against a new target if it wishes. Or it may discontinue its attack and forfeit attacking for that turn.
No, you cannot attack your monsters on your side of the field.The exception to this rule are the cards Magical Arm Shield (MAS) and Ancient Lamp. If your opponent activates MAS, they will take control of 1 of your face-up monsters, except the attacking monster, and it is attacked instead. Ancient Lamp can make 1 your attacking monster attack another monster on your field instead.
yes. monsters like giant rat or shining angel lets you summon a monster when they are destroyed by battle, so if you are battling and you attack and kill your own shining angel, you can summon another monster and attack with that one.