This card can be treated as 2 Tributes for the Tribute Summon of a Dragon-Type monster. If this card is in your Graveyard during your Standby Phase and you control no monsters, you can Special Summon this card in Attack Position. You cannot activate this effect if there are any monsters in your Graveyard that are not Dragon-Type. If this card is Special Summoned with this effect, remove it from play when it is removed from the field.
so i tried dimension gating totem dragon and then bringing it back for it to get destroyed by the next moster to save life points but then i couldnt active totems dragons effect next turn from the graveyard to summon my blue eyes eve though there was no monsters on my field why?