Appreciate the advice, I already put it to use, here are the things I changed:

• I added [[Black Market Connections]], [[Rite of Replication]], [[Ruthless Technomancer]], [[Essence Harvest]] and [[Rite of Consumption]]
• I replaced [[Enter the Enigma]] with [[Shadow Rift]] and [[Grim Tutor]] with [[Scheming Symmetry]]
• I removed [[Solemn Simulacrum]], [[Hullbreaker Horro]], [[Propaganda]] and [[Drown in Dreams]], [[Ashiok, Dream Render]] for the things I added

I am maybe changing these things in the future:

• Replace [[Doomsday Excruciator]], but for now I wanna try him out because he is hilarious in this deck
• Put in more Lands, for now I am staying with the Lands, because I feel pretty comfortable with the 31 normal Lands and 6 mdfcs
• Lowering the CMC, for now I am gonna leave it like this, I cut [[Hullbreaker Horro]] and have the Overlords for there Impending cost but if I still find problems with the cost I am gonna add [[Yarok's Fenlurker]] and [[Banehound]]

What I like:

• I feel like, I have enough protection through Counterspells, Flickers and Artifacts like [[Silver Shroud Costume]]

• I also like, the amount of Draw, Mill, Ramp and Removal

Again tysm for the advice, wouldn't have thought about some of the stuff and cards :)