There is no hard limit. You can perform one Normal Summon or Set, as many special summons, and activate as many spell or trap cards as you can, keeping in mind the zone restrictions. Apart from that, there is no actual limit, and one deck abused that to the max.
The "Tunde's Trunado" deck spent 11 minutes on its first turn. It would play continuous spells to add counters to Royal Magical Library, draw cards from that, bounce the continuous spells back to hand with Giant Trunade, play them again for more card draw, recycle Giant Trunade over and over by various means. Then it would win in the oppoenent's draw step with Life Equalizer and Blasting the Ruins.
Once every turn
No, it is an Ignition Effect and can only be used in your turn.
No, Quickplay Spell Cards must be Set on the field on a previous turn, if you wish to activate them during the opponent's 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.
You can attack during the Battle Phase, starting during the second turn of play. Basically, if you go first, you can't attack during your first turn. If you go second, you can attack during your first turn.
There is no real hard limit - as long as you've got a spell card in hand, and a slot in the S/T zone for it to go, then you can activate it.
Once every turn
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.
At most, 10; this is because you may end up activating all 5 of both your opponent's and your own cards each, but cannot play any more and have them activate that same turn.
Yes.
Turn of the Cards was created in 1974-05.
You can Set one monster, and as many S/T cards as you've got cards and open slots available.
Yes, generally you canBUT there are some cards that doesn't allow the effect to activate if you attack. Example is Chaos Sorcerer.so make sure to read the card text first.
Yes, they can. If you want to activate a Quick Play card in your opponent's turn though, you need to have Set it on the field in one of your turns.
A Turn of the Cards was created on 1914-02-08.
No, it is an Ignition Effect and can only be used in your turn.
Found on back of box. Object: To get rid of all your cards and catch your opponents with as many points as possible. The Play: All cards are divided into 3 bands of color. Each player in turn, tries to play a card that matches and covers two colors on the card face up on the table.