Yes, as long as it's your own turn. If you want to activate them in the opponent's turn, you need to have Set them on the field during your own.
Polymerization is a spell speed 1 card. You cannot activate it in your battle phase at all.
You can activate any quick effect that can summon, during the battle phase. There are also many Triggered effects that would activate here too. But you cannot Normal Summon, or perform Special Summons that aren't resolvable effects, like Synchro Summons or Chaos Sorcerer.
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.
Monster Reborn is a Normal Spell Card, so is Spell Speed 1. You can only activate it during your own Main Phases, as the start of a chain.
their really isn't a big difference between them except for the fact in Main Phase 2 you can't attack again if you are planning on setting Spell [S]/ Trap [T] cards face-up or face-down. what i mean is - Draw Phase - Main Phase 1 - Battle Phase - Main Phase 2 - End Phase during Main Phase 1 you can set your s/t cards and launch you attack in your battle phase. Main Phase 2 if you can set more s/t cards after your done setting the amount you want to set you'll probably have to end your turn.
You can activate Windstorm of Etaqua during the battle phase in Yu-Gi-Oh. The card, Windstorm of Etaqua can not be activated during the damage step or after using a monster to attack your opponent in the battle phase.
It's a Quickplay Spell card, so can be activated in your battle phase.
It doesn't matter at all. You can summon first, set S/T cards first, activate S/T cards, either side of the Battle Phase.Obviously if you are in main phase 2, you cannot summon and then attack because you've passed the Battle Phase already.
Polymerization is a spell speed 1 card. You cannot activate it in your battle phase at all.
You can activate spell speed 2 or 3 effects in every part of the battle phase, and various triggered effects will activate here also. For example,- When you start the battle phase, you could use Call of the Haunted to summon an attacker.- When you declare an attack, your opponent can respond with cards like Sakuretsu Armor.- During the beginning of the Damage Step, you can use various ATK-modifying cards like Shrink.- During Damage Calculation is where you use Honest, or Kuriboh.- After Damage Calculation, flip effects will trigger, monsters who trigger when they go to the graveyard will trigger also, such as Sangan.Also at any point in the above, appropriate counter cards can be used, such as Solemn Judgment, Solemn Warning, Divine Wrath, etc.
Yes, of course. Trap Cards can be activated in the End Phase.
It is a trap card so is spell speed 2, both for its initial activation and also its graveyard activation. It can be used in the battle phase, just not during the Damage Step.
You can activate any quick effect that can summon, during the battle phase. There are also many Triggered effects that would activate here too. But you cannot Normal Summon, or perform Special Summons that aren't resolvable effects, like Synchro Summons or Chaos Sorcerer.
Yes, Stardust Dragon can activate its negation Quick Effect in the Battle Phase, and even the Damage Step.
Yes, it can be activated during your opponents battle phase.
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.
Yes, you can chain to a card(s) that activate during the Standby Phase.