Unless specifically stated otherwise, by either directly saying so, or the effect is spell speed 2, then a special summon can only be performed in your own turn. Megarock Dragon can only be special summoned by its own effect in your own turn.
Yes, it can be activated during your opponents battle phase.
No. Grapha, Dragon Lord of Dark World's inherent special summon can only be used on your own turn. Only monsters who summon themselves by a Triggered Effect, or by Quick Effect, or specifically say they can be summoned on the opponent's turn, can do otherwise.
No, you can't.
No, you either negate the entire effect with Prime Material Dragon or get rid of all of the monsters on the field. You cannot simply choose which monsters gets to be destroyed. You cannot negate an effect midway during its resolution.
No. The text has been changed but the effect remains the same, first it was a 'cannot be special summoned except by..' monster, which means only the listed method could ever be used, it was not the kind that could be brought back assuming you summoned it properly first. Now it says "Must be summoned by....cannot be summoned in any other way", again, it doesn't matter if you properly summoned it, it can't be summoned back from the graveyard.
the frost dragon is at northlands and mount frost.....hope you enjoy killing the dragon. The Frost Dragon is a monster that comes out during special events.
His opponents were George Washington and Thomas Jefferson.
Spain
Spain.
the flying dragon eats and sleeps during the day x
Scalawags
46%
Yes, it can be activated during your opponents battle phase.
No. Grapha, Dragon Lord of Dark World's inherent special summon can only be used on your own turn. Only monsters who summon themselves by a Triggered Effect, or by Quick Effect, or specifically say they can be summoned on the opponent's turn, can do otherwise.
He used humour to disarm his opponents.
No, you can't.
-- A dragon is eating the sun. -- There's something special and different about the sun's rays during a solar eclipse that's especially dangerous for your eyes, and that's the reason that you should not look at the sun during the eclipse.