Ichorid & co are in addition to Creeping chill. I think that 4 bloodghast is not enough for hasted creatures, and I added the classic minions (ichorid and ghouls were played long long time ago...)
My list was:
3 null rod
4 creeping chill
Side, I used fow, mistep, chain of vapor and mindbreak, but it's very bad. I didn't like it
This first version got 3-2 (4-1 if I didn't make so big mistakes in one g3). And I'm sure It could be improveda lot.