There are several small questions
1.1 Is Evelynn uncovered while she's in her passives when Shen sucks her?
1.2 becomes Twitch while he's in his Q is revealed when Shen sucks him!
2.1 Can Shen Yuumi answer while listening to someone?
2.2 If Yuumi is consulted while it is on someone, will he be revealed if he is just Camouflages?
2.3 Is Yuumi thrown down when she is served?
3. Can shen whitch Twitch while Yuumi is on it?
4. What exactly happens with Yuumi etc?
1.1 and 1.2 and 2.2 no Champions in Camouflage are not revealed, so it is in the LoL wiki.
2.1 I think it will be difficult to meet his best use the champion pictures on the side.
2.3 no
3 Yes use to security but also the Champbilder
do not understand exactly what you mean just look into the LoL wiki. However, I can only recommend the English version because the German version has quite a few mistakes in it.
1.1 no
1.2 no
2.1 Yes
2.2 no
2.3 No (pronounced lol)
3. Yes
4. Nothing (so get the shield, but nothing else)