In this specific list, we are running even fewer creatures between both boards than Grixis Shadow, and I wanted to run even fewer. Obviously our main threat is Death's Shadow, but we do have other threats as well!
Death's Shadow--> We can't have a Shadow list and not talk about Shadow itself!! The potential to have a 13/13 for is insane, although most of the time we don't want them that big as it means we are... well...dead. However, we can still get a ton of value from the Shadow. Being between 7-9 life is the optimal amount in my eyes, but I have gone lower and been safe. Just don't forget to keep track of your Shadow since it grows so fast!
Big Fishy--> More or less or secondary threat. For Angler, we have the same logic why Death's shadow is good. A 5/5 for is generally what we pay for him since we cast so many cheap spells, cycle streeth wraiths and cast Thoughtscours and fetchlands! Most lists will run 2 (so do I) but that number can change a bit. Delve fatties are strong, which is why we also run...
Tassy G.--> Another delve fattie for less mana technically. He also has the upside of recurring cards from the graveyard, which in a long game can be very beneficial. , but that number is flexible. I've gone up to 2 copies! I'd max at 3 though since he is legendary.
After actual threats, we have some more 'utility' based creatures to run that really help to hold the deck together. Without these, the deck can often be slow and a bit clunky at times.
Snapcaster Mage--> We are a control list after all! Flashing back spells is strong in any list and nothing changes once you add in Death's Shadow. We have so many amazing targets since Esper colors gives many good removal, cantrip and utility cards. Also, Snappy does have a 2/1 body that can get the job done if need be, but probably not the smartest or easy option in the world. Don't count him out though, as he does get the job done!
Streetwraith--> Alright, I know that I have already talked about the wraith but it is still a creature by definition. Sure, a 3/4 body for 5 is pretty awful, but we must at least acknowledge the fact he can attack and block in worst case scenarios. Sometimes he even wins game due to swamp walk, although it is rare. The best part about the card as a creature is the fact it's CMC is 5. Just like with Tasigur and Angler, Fatal Push and Abrupt Decay can't touch it, and it is out of Bolt range. So I guess there are some redeeming qualities...kinda...