Scenario #1 N-934 when Zetsu(N-890) is in play FIRST
Player 1 plays Zetsu N-890 and tracks "Sasuke Uchiha"
Player 2 has a turn 4 or higher "Sasuke Uchiha" on the field.
Player 2 may play "Sasuke Uchiha" (State 2) because Zetsu only negates in-play Ninja effects.
Player 1's Zetsu negates "Sasuke Uchiha" (State 2)'s effect until its own effect is no longer in affect. (i.e. removed from play or negated) this is because both effects are continuous and Zetsu's effect is being applied first.

Scenario #2 N-934 when Zetsu(N-890) is in play SECOND
Player 1 plays Zetsu N-890 and tracks "Sasuke Uchiha"
Player 2 has a "Sasuke Uchiha" (State 2) on the field already which would negate Zetsu UNTIL Player 2 has a card in hand
Player 1's Zetsu negates "Sasuke Uchiha" (State 2)'s effect until it's own effect is no longer in effect. (i.e. removed from play or negated) this is because both effects are continuous and Zetsu's effect is being applied first.

Scenario #3 Turn 4 "Sasuke Uchiha" (State 2)
To put N-934 into play all hand cost and Entrance cost must be met. While N-934 is in the Reinforcement Deck its effect can be added to any Chain any number of times.

Scenario #4 "Sasuke Uchiha" (State 2) vs Wood Style Jutsu: Four Pillars Prison Jutsu
Player 2 has a "Sasuke Uchiha" (State 2) on the field. No hand.
Player 1's Yamato uses J-536.
Player 2's Non-water Ninjas ONLY are now standby.

Scenario #5 Sasuke w/ 1 Jutsu in hand
Player 2 has a "Sasuke Uchiha" (State 2) on the field. 1 jutsu in hand.
Player 2 then sends Sasuke’s team out to battle, and uses the jutsu. Water ninjas are now immune to Player 1's effects.
(Because Sasuke's effect does not use the chain, it is a continuous effect that constantly checks if it should give protection or not.)

Scenario #6 "Sasuke Uchiha" (State 2) vs N-886
Player 1 has 1 face up battle reward
Player 2 plays "Sasuke Uchiha" (State 2)
Player 2 obtains a jutsu back to hand via karin (N-925)
Player 1 uses Shikamaru (N-886) to flip one BR face down, and negate Sasuke's effect.
The battle phase begins
Player 2 uses the jutsu and has no cards in hand
Player 1 may now chain, because "Sasuke Uchiha" (State 2)'s effect is negated (i.e. no longer there) at least till the end of the turn. Even if he empties his hand during the turn it is still negated.

Scenario #7 "Sasuke Uchiha" (State 2) vs N-878
Player 2 has no cards in their hand and ONLY "Sasuke Uchiha" (State 2) in play
Player 1 plays Sasori N-878, and then activates the effect to put in play Sasori (Puppet Mode) N-947
Player 1 then sends Sasori out to attack.
Player 1's turn ends, "Sasuke Uchiha" (State 2) would not return to Player 2's hand via N-947's effect.
If Sasori (Puppet Mode) is the only card in Player 1's village he would remain in play; but Player 2 would have to return a Ninja.

Scenario #8 vs "Sasuke Uchiha" (State 2)!!
Player 2 has "Sasuke Uchiha" (State 2) on the field.
Player 1 attacks and then plays J-717
Player 2's water ninja would not be affected. (Unless the situation is like Scenario #1)