>>95918953
>>95919424
>I am very confused on how sleep works on a group of enemies with different Hit Dice. Does it only affect one group? Is it random? Do you roll 4d4 once? I don't get it
B/X or AD&D? I presume AD&D because of the 4d4 bit, so I've written the attached infographics just for you.

Remember to ALWAYS check the DMG for clarifications and corrections to PHB spells!