Your opponent will not immediately take damage when your summon "Ameba". It's effect will only inflict damage to your opponent when control of it switches to your opponent's side of the field while it is face-up. So if your opponent uses a card like "Brain Control", "Snatch Steal", "Mind Control", or "Change of Heart" and takes control of it while "Ameba" is face-up, they will take 2000 points of damage to their Life Points. You can use cards like "Creature Swap", "Shien's Spy", or "Mystic Box" to force your opponent into taking "Ameba" and losing Life Points. If your opponent uses a card like "Monster Reborn" to retrieve "Ameba" from your Graveyard, they will not take 2000 points of damage. The effect of "Ameba" will only work once while it is face-up ,so you will not take damage if you gain back control of your monster. However, if "Ameba" is flipped face-down by a card effect, like "Book of Moon", and flipped face-up, if another player takes control of the monster they will receive 2000 points of damage.
No the attack would not happen because they would no longer have a monster in attack position to attack with.
The game ends immediately after a resolution in which one or both players have their life points reduced to zero. Remember, a lot of things can happen in between a monster declaring an attack, and the damage actually being dealt. Responding to the attack with Just Desserts will end the game when it resolves, the game finishes way before the Blue-Eyes can deal the 3000 battle damage.
If the opponent's monster is in attack mode, then both monsters are destroyed. If it's in defence, then nothing happens.
If a Red-Eyes Zombie Dragon you control attacked an opposing Red-Eyes Zombie Dragon in Attack Position on your opponent's side of the field, both monsters would be destroyed at the same time in the Damage Step and neither monster's effect would activate.If a Red-Eyes Zombie Dragon you control attacked an opposing Red-Eyes Zombie Dragon in Defense Position on your opponent's side of the field, your opponent's Red-Eyes Zombie Dragon would be destroyed by battle, and you are given the option of Special Summoning it to your side of the field.
You will lose control of the program, and the computer will probably crash.
the person is not allowed to atack until the equip card is destroyed
You risk liver damage along with brain and a hangover. You can get a blackout and lose all control over your actions, therefore you may commit a crime and end up in jail. Anything can happen, really, but the main consequence is severe damage to your body.
Attack on Springfield happened in 1675.
Attack of the Saucerman happened in 1999.
Typo Attack happened in 1982.
Sudden Attack happened in 2004.
Attack of the Zolgear happened in 1994.