Forum:Wyvern and totem multiple chaining

My opponent has 2 Red-Eyes Wyverns in the graveyard and 2 Totem Dragons in the graveyard and I have a Thunder King Rai-Oh on the field. It is my opponent's turn. He declares it is his end phase. If he wants to activate both Wyverns effects and special summon 2 Red-Eyes Darkness Metal Dragons to his side of the field does it happen simultaneously or does the first one start a chain in which I could activate Rai-Ohs quick effect to negate it. My main question is can Rai-Oh negate both summons if they occur simultaneously or do I chain the effect to one summon and then after one summon is completed/negated then the next one would occur.

Totem dragon is brought up because if there are 2 in the graveyard and there are no monsters on the field can both special summon simultaneously or does one have to special summon first thereby negating the second one from coming out because the condition would not be met when the second one tries to come out since there is now a monster on the field. 137.104.83.220 16:40, September 8, 2009 (UTC)