If he can't perform any actions or move, then he hasn't taken a turn.
If his initiative came up in the order and he CHOSE to do nothing, then he took his turn. But if he is HELD or otherwise INCAPACITATED and prevented from doing anything (especially from doing anything to defend himself) then he has not taken his turn, he has had his turn taken FROM him and I would rule that the Assassin has Advantage.
Think logically for a second. Why would it be harder for an Assassin to hit someone who is completely incapable of moving or defending himself in any way than it would be for him to hit someone who is walking down a hallway, oblivious?
If the target had already taken a turn in the combat (meaning, got to actually take some kind of action), then one can assume he is in a fighting stance, has his weapon out, maybe a shield up, that sort of thing. But until he DOES something in combat, he's in the same position (or a worse one) than he was during the surprise round.
If his initiative came up in the order and he CHOSE to do nothing, then he took his turn. But if he is HELD or otherwise INCAPACITATED and prevented from doing anything (especially from doing anything to defend himself) then he has not taken his turn, he has had his turn taken FROM him and I would rule that the Assassin has Advantage.
Think logically for a second. Why would it be harder for an Assassin to hit someone who is completely incapable of moving or defending himself in any way than it would be for him to hit someone who is walking down a hallway, oblivious?
If the target had already taken a turn in the combat (meaning, got to actually take some kind of action), then one can assume he is in a fighting stance, has his weapon out, maybe a shield up, that sort of thing. But until he DOES something in combat, he's in the same position (or a worse one) than he was during the surprise round.
Last edited: