greetings. i know Last Turn is banned in advanced but this has been bugging me for quite awhile regarding the rulings on this card...

lets say my opponent has 1000lp due to Wall of Revealing light, Jowgen on the field and last turn face down, my field is clear, my turn comes, i draw and he activates LT and declares Jowgen.

Scenario 1: do i lose at this point being unable to summon a monster?

Scenario 2: after he chooses Jowgen, i cant summon a monster due to his effect, so now, according to the ruling on LT, he will win at the end of my turn due to his monster being the only one on his field left. so i continue with my turn and play Smashing Ground and kill his Jowgen, since i have now destroyed his Jowgen, he can no longer meet the victory conditions of LT at the end of my turn. would that now result in a draw?

Scenario 3: his field monster is now BEWD instead of Jowgen, and he chooses it, my choice is the same, they both destroy each other in this case, now, if i was to summon another monster before i end my turn, would i win the duel, or would it still result in a draw?

sorry if some of this doesnt make much sense, i find the LT rulings really confusing.

any clarification on this would be greatly appreciated, thanks

As far as scenario two or three, it is impossible to have any cards in your hand because Last turn destroys the hand and field. As far as Jowgen in scenario one is concerned, I believe it is correct and you would not be able to summon a monster, your opponent resulting in the victor of the duel.

Chrome is half right. It IS possible to have cards in your hands AFTER Last Turn resolves. Regenerating Mummy anyone? However, it's highly unlikely, and should be impossible unless the Last Turn player is a fool, for you to keep a magic card or the like in your hand.

Well, if Sangan was on the field when Last Turn activated, would the searched monster remain in the hand?

As long as we're talking about the Traditional Format, I hear Sinister Serpent can beat up Jowgen's Last Turn . . .

Could be wrong though.

Last Turn, doesn't destroy anything, just for clarification, it mearly sends all cards to the grave.

Which is why you wait until AFTER they get the serpent,preferably at the start of their Main Phase.

And yes, Sangan would still search and the monster remains in hand.

If the monster from sangan remains in ur hand then can u play that monster that turn??
and if u can wat does that mean? in regards to these scenarios:
-Your random monster from sangan and your oppents monster ss from last turnremain on the field at the end of the turn
-No monsters remain on the field besides the random monster from sangan

further more can the random monster from sangan atk?

If you haven't summoned yet, then yes you can play it, and yes it can attack.