5 is the max, though in one turn you can Normal Summon one, unless you use a card to summon more. You can special summon as many times as you want. There are also flip summons, fusion, synchro, ritual, and still a few other summons. Remember, the max is still 5 at any given time. 5 is the max you can have on your field.
Cards in your Extra Deck follow the same rules as for cards in your Main Deck. You can have three of each, but keep in mind (in Advanced Format) Dark Strike Fighter is banned, Goyo Guardian and Black Rose Dragon are limited to one each.
as many as you want
as many as you want
as many as you want
as many as you want
as many as you want
as many as you want
as many as you want
as many as you want
as many as you want
as many as you want
as many as you want
as many as you want
There is a limit of one normal summon or set per turn but there is no limit to the number of special summons, which can only be activated by a card effect
1but certain cards like double summn can get you 2 per turn
A lot of monsto cards
around 21
Some monsters (like "Quilbolt Hedgehog") turn blue while in defensive mode in the 5D's anime to further contrast the visual appearances of attack and defense position monsters. Perhaps it was determined that it wasn't enough to show a monster crossing its arm, kneeling, etc.
Once every turn
No, it is an Ignition Effect and can only be used in your turn.
yes. in the official Yu-Gi-Oh! rulebook, it states that you can only normal summon once per turn, but you can special summon as many times as you can per turn.
The first turn of the game? No. The first turn they are summoned? Yes, of course.
Yes, of course they can. Unless the monster specifically says it cannot change its battle position in the same turn.
Some monsters (like "Quilbolt Hedgehog") turn blue while in defensive mode in the 5D's anime to further contrast the visual appearances of attack and defense position monsters. Perhaps it was determined that it wasn't enough to show a monster crossing its arm, kneeling, etc.
Once every turn
If this card attacks a defense position monster your opponent controls, destroy all defense position monsters your opponent controls after damage calculation. During your end phase, destroy all of your monsters that did not declare an attack this turn.
1 Tuner + 1 or more non-Tuner monsters If this card attacks a Defense Position monster your opponent controls, destroy all Defense Position monsters your opponent controls after damage calculation. During your End Phase, destroy all other monsters you control that did not declare an attack this turn.
Yes.
No, it's not true. You get only one 'Normal Summon' per turn, but not only can other cards 'Special Summon' one or more monsters in the same turn as you do this, but other cards can let you Normal Summon more than once too.
no they don not turn into monsters. if they did that would be awesome, but it is only in the show.
Waboku will reduce all Battle Damage to your Life Points to zero and/ or prevent your Monsters from being destroyed by battle for the turn it is activated. So yes, the first scenario you described is what will occur if you play Waboku.
No, it is an Ignition Effect and can only be used in your turn.
No, Swords of Revealing Light only flips face-down monsters when it resolves. If any of the opponent's monsters are Set after that, even in the same turn they won't be flipped by it.
There's no hard limit. As long as you've got the resources to, you can peform as many fusion summons in a single turn as you want.