It is an Ignition Effect and therefore can only be used in your own turns, in your own main phases.
Its most recent print even includes "during your main phase".
No, you can't.
Unless specifically stated otherwise (Royal Oppression, etc), you can only activate the effects of a card you have control of. If 'your' Winged Rhynos is on the opponent's side of the field, then in game terms, it is 'his' monster. He's the only one that can activate the effect.
yes it would, because when the opponent attacked, it was his turn and the effect carries on until the end of the next turn which would then be your turn. For e.g, if your opponent activated the effect then the effect would end at the end of your end phase. If you activated the effect, then it would end at the end of your opponents end phase.
No, it triggers in response to the declaration of the attack. If it is face down at this point, then it misses its chance to activate. When it is flipped face-up at the beginning of the Damage Step, it is too late to use its effect.
No. Flip Effects only activate when the card is flipped, which will happen when Flip Summoned, or when the monster is attacked, or when an effect specifically directs it to be turned face up. Simply destroying a face-down monster, or removing it from play, does not 'flip' it, so Flip Effects will not activate.
Yes. The flip effect itself will activate after damage calculation.
No, you can't.
Destroying a monster does not flip it. But if a monster is flipped face-up when attacked, and considered destroyed by battle, then the flip effect will still activate.
No, Gladiator Beasts must survive battle, for them to activate any of their 'if this card attacked or was attacked' effects.
No, flip effect activate when the card is flipped, which will be by Flip Summon, or being attacked, or flipped by an effect. Simply being destroyed while face down, will not 'flip' the monster.
Yes. A Gladiator Beast's effect can activate during the end of any Battle Phase, as long as it attacked or was attacked, and has survived the Damage Step. If this occurred during your opponent's turn, you may return the Gladiator Beast to the Deck and Special Summon another one whenever your opponent declares the conclusion of his/her Battle Phase.
No. It is an Ignition Effect, meaning you may only activate Snipe Hunter's effect during your turn.
Flip effects will activate if flipped manually by Flip Summon, or when attacked. Also must include "FLIP" in all caps for its effect to activate, or say 'when this card is turned face-up'. For example if a monster such as Guardian Sphinx is flipped face up by an attack or an effect (spell, trap or monster), the effect does not activate, because only a Flip Summon triggers it, not a generic flip. When a card effect destroys a face-down monster, the monster is destroyed and flip effect isn't activated because the monster never flips. Mystic Swordsman Lvl. 4 destroys the monster it attacks without flipping it, so a Flip Effect monster attacked by it will not get its flip effect. To summarize, if a FLIP effect monster is attacked while face down, then it will activate. But if it's destroyed by a card effect while face down then it won't activate. Some card effects let you flip monsters face up and let the flip effect activate, like book of taiyou. But others, like ceasefire don't let it activate. If it says 'when this card is flipped face up' then you have to do that manually on your own turn.
Flip effects will activate if flipped manually by Flip Summon, or when attacked. Also must include "FLIP" in all caps for its effect to activate, or say 'when this card is turned face-up'. For example if a monster such as Guardian Sphinx is flipped face up by an attack or an effect (spell, trap or monster), the effect does not activate, because only a Flip Summon triggers it, not a generic flip. When a card effect destroys a face-down monster, the monster is destroyed and flip effect isn't activated because the monster never flips. Mystic Swordsman Lvl. 4 destroys the monster it attacks without flipping it, so a Flip Effect monster attacked by it will not get its flip effect. To summarize, if a FLIP effect monster is attacked while face down, then it will activate. But if it's destroyed by a card effect while face down then it won't activate. Some card effects let you flip monsters face up and let the flip effect activate, like book of taiyou. But others, like ceasefire don't let it activate. If it says 'when this card is flipped face up' then you have to do that manually on your own turn.
Unless specifically stated otherwise (Royal Oppression, etc), you can only activate the effects of a card you have control of. If 'your' Winged Rhynos is on the opponent's side of the field, then in game terms, it is 'his' monster. He's the only one that can activate the effect.
No, Alector has no effects that can be used in the opponent's turn. His summon effect is something that can only be done in your main phases, and his negation effect is an Ignition Effect so again, can only be done in your turn.
SkyscraperField Spell/SPELLWhen a monster that includes "Elemental Hero" in its card name attacks, if its ATK is lower than the ATK of the attack target, increase the ATK of the attacking monster by 1000 points during damage calculation only.No, its effect does not activate. "When a monster...attacks...". This automatically tells you that it activates when your monster attacks, but does not activate if your monster is attacked.