Anyone knows what is my problem?
It just happened today. I use Unhappy girl deck. I draw the temple of kings in my last turn, activated it, then tribute summoned Serket. After that I wanted to use its effect to remove this card and Serket and special summon a fusion monster, but I cannot activate that effect. My backrow was occupied by 2 spell reclamations set in the previous turn. As I cannot remove any of them from the backrow, my union attack was failed. Noted that I have used this strategy many times per day since the beginning of this event and have had no problem so far until today.
You have to have at least one monster either in you deck or hand to activate the effect of Temple of Kings. Im not sure why but it seems to work like this.
They fixed that actually. Now you don't need to have 1 monster in hand anymore, but it happened to me once after the update so keep 1 monster if you want to play it safe.
I agree., it's bad programming. You can't activate the effect cause you don't have monster left in your deck (Temple's effect) but you should cause you have at least 1 on your extra deck.
Man, if you have Summonner of Illusions just use it instead. Temple method requires that you have drawn both Temple and Serket before the penultimate round
Someone once told me you need a monster card in hand when doing it (don't know why). After that never had that problem.
But I have tried it once before without a monster in hand...