This one always causes arguments.
Point 1 -> Activating Threatening Roar in response to an attack won't do anything, it affects attack declarations.
Point 2 -> The turn player can't enter the battle phase unless the opponent agrees to it. An opponent will want to use Threatening Roar at the end of the main phase, before the battle phase is entered. Many players don't announce the change of phase, and this is normally ok as they must still accept the opponent can say they wanted to use something in the previous phase.
Despite Point 1, the opponent should not be penalised if the turn player didn't give them a chance to activate the Threatening Roar, by skipping from the main phase straight into an attack declaration.
no
Yes, as long as the spell card is a Quickplay Spell, and the trap card is not a Counter Trap. So you cannot chain Monster Reborn to any trap. Nor can you chain Book of Moon to a Counter Trap, for example.
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
It will be hard to say but the best thing to do is look on youtube for the answer. That way you can see what to activate and summon etc.
Magical hats can only be used during your opponent's battle phase. Seeing as they can't flip their monsters during their battle phase, no. However, if your opponent does activate a spell or trap card during the battle phase, you can use Magical hats and protect your monsters. Overall, yes. You can use magical hats to protect your monsters from targeting effects as long as it's during your opponent's battle phase.
activate
no
Yes, as long as the spell card is a Quickplay Spell, and the trap card is not a Counter Trap. So you cannot chain Monster Reborn to any trap. Nor can you chain Book of Moon to a Counter Trap, for example.
Your opponent will be able to destroy one of your Crystal Beast Amber Mammoths in battle even if two or more are on the field. If you redirect a attack to an Amber Mammoth, the conditions to activate another Amber Mammoth's effect would be gone because your opponent finished declaring an attack against a Crystal Beast Monster you control.
Yes.
After you activate "Heart of the Underdog", you draw a card from your deck like you normally would during your Draw Phase. If that monster you draw happens to be a Normal Monster, you can activate "Heart of the Underdog". You show the Normal Monster to your opponent as proof and draw another card from your deck. If that new card that you draw is a Normal Monster too, you can activate "Heart of the Underdog" again. You repeat the process until you don't draw another Normal Monster.
No, it is an Ignition Effect and can only be used in your turn.
Yes, Seto Kaiba is available as an opponent in the Fourth Level, after the Rare Hunters.
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
yes you have to have lower DC than your opponent in story mode
Yes, of course. Exactly the same as main phase 1.
It will be hard to say but the best thing to do is look on youtube for the answer. That way you can see what to activate and summon etc.