Block Attack is a Normal Spell Card. Normal Spell Cards can only be activated in your own turn, in main phase 1 or 2.
Field Spell Cards can be destroyed by any effect, be it Spell, Trap, or Effect Monster, unless another card specifically denies that possibility (ie. Field Barrier). An active Field Spell Card is also destroyed when a new Field Spell Card is played. For example, if you activate Forest, the Playing Field becomes the Field Spell Forest. However, if you or your opponent wishes to play another Field Spell Card, Forest is destroyed first and sent to the Graveyard. Then, the new Field Spell Card is activated. Again, this possibility can be eliminated by Field Barrier.
There are many strong dinosaur decks, but one of the powerfullest is the Ultimate Tyranno Infinity OTK. Where you remove dinosaurs from play with Survival instinct the have both Tyranno Infinity and Ultimate Tyranno on the field. First, use Heavy Storm to destroy all the opponents spell and trap cards. Second, attack all the opponents monsters with Ultimate Tyranno. Third, finish of the opponent with Tyranno Infinity.
A Field Spell Card is destroyed when another Field Spell Card is activated or via an effect, such as Dust Tornado. If you activate a Field Spell Card while there is another already active on the field, your Field Spell Card will destroy and replace the existing one.
Protego Totalum is a spell that protects an area from magic, like a force field. :)
Earthbound Immortals don't care who owns the Field Spell Card, only that one is in play.
Field Spell Cards have the advantage of being able to change the entire state of play, for both you and your opponents side of the field.
OPPONENTS...
No because the field spell card is just simply being replacing by another field spell. So, you can't use Magical Citadel of Endymion's effect to stop it from being sent to the graveyard. However, you may protect your field spell card with the spell card Field Barrier.
Yes.
Block Attack is a Normal Spell Card. Normal Spell Cards can only be activated in your own turn, in main phase 1 or 2.
That is the correct spelling of the word "opponents".
regular spell cards can be activated only on your turn, quick play spell cards can be set then activated during your opponents or your turn, and spell cards with the infinity sign are treated like regular spell cards but stay on the field until it is destroyed traps cannot be activated from you hand they must first be set then activated on your next turn or your opponents turn knowing when to activate these spell or trap cards is tricky you have to know when to activate them or they will end up not helping you out at all
Field Spell Cards can be destroyed by any effect, be it Spell, Trap, or Effect Monster, unless another card specifically denies that possibility (ie. Field Barrier). An active Field Spell Card is also destroyed when a new Field Spell Card is played. For example, if you activate Forest, the Playing Field becomes the Field Spell Forest. However, if you or your opponent wishes to play another Field Spell Card, Forest is destroyed first and sent to the Graveyard. Then, the new Field Spell Card is activated. Again, this possibility can be eliminated by Field Barrier.
If your opponent had an active Field Spell Card, and you activate another Field Spell Card, the Earthbound Immortalwould not be destroyed.If you had an active Field Spell Card, and you activate another Field Spell Card, the original Field Spell Card is destroyed before you place the new Field Spell Card, therefore providing a gap between the time that there is a Field Spell Card, and when there is not. In this scenario, the Earthbound Immortal is destroyed.
There are many strong dinosaur decks, but one of the powerfullest is the Ultimate Tyranno Infinity OTK. Where you remove dinosaurs from play with Survival instinct the have both Tyranno Infinity and Ultimate Tyranno on the field. First, use Heavy Storm to destroy all the opponents spell and trap cards. Second, attack all the opponents monsters with Ultimate Tyranno. Third, finish of the opponent with Tyranno Infinity.
A Field Spell Card is destroyed when another Field Spell Card is activated or via an effect, such as Dust Tornado. If you activate a Field Spell Card while there is another already active on the field, your Field Spell Card will destroy and replace the existing one.