if you have succeeded in taking a bite action against a recently dead target creature, that creature becomes a young day spider if it hasn't been dead at least 24 hours. that young day spider is under your control and it can help fight in battle. the spider stat block is used for the stats of the young day spider except the cursed young day spider will do anything you say, it has half your health, it has (a number that is 10 + your dexterity modifier number) AC, you do not need to feed it food, it does not need water, and it is not evil. a young day spider cannot be ridden. also this ability technically changes any non undead dead creatures into young day spiders as a alien way for the day spider to reproduce. the young day spider is a baby spider hence why it doesn't need food or water and since the day spider is a mammal, well you know what i am getting at. also a young day spider technically doesn't have to follow your orders if it was evil before it was changed.

Note 1: this ability does not work on constructs.
Note 2: you can have an unlimited young day spiders but only one young day spider can be used in combat per battle. and you cannot switch young day spiders mid battle. once the young day spider that aided you in battle dies, it is permanently dead unless resurrected by something.
note 3: out of battle you can instantly dismiss any of your young day spiders or call one of your young day spiders to you. if you call one of your young day spiders to you, that young day spider will arrive instantly in the area to receive it's next orders from you.
note 4: you actually can choose whether or not to use this ability.