Bag of blood and rotten Stirges and the Otyugh version 2.0

This bag appears to be made of rotten stinky flesh and dried blood, crafted from a red, slimy material. Although it looks empty, a creature flies out when the bag is opened. The bag weighs 1/2 pound.

Stirge Mod
You can use an action to open the bag. When you do, a Stirge emerges (see its stat block in the Monster Manual). The creature is friendly to you and your companions and acts on your turn. You can use a bonus action to command how the creature moves and what action it takes on its next turn, or to give it general orders, such as to attack your enemies. In the absence of such orders, the creature acts in a manner appropriate to its nature.

Limitations
Once five Stirges have flown out of the bag, it can't be used again until the next dawn. You can never have more than five Stirges out at the same time. The bag always contains five Stirges and replenishes its supply if some are killed outside of the bag. To simplify gameplay, let them act like a swarm.

Flaw of the Bag
If you do not feed the bag one ration of blood every dawn or every 24 hours, all five Stirges will fly out attack you and attempt to feed on you. They will attack until they have all successfully performed a Blood Drain or are killed. You can use one normal ration from your supply for this, or you can take damage from five Blood Drain attacks, or you can play it out.

Smell
The bag emits a smell of rotten flesh and blood up to 10 feet. If someone cleans or manipulates it, or uses a spell to remove the smell, the bag will stop functioning. However, it will revert back to its original odor and appearance after one hour and start to work again, regardless of the spell used. 

Otyugh Emergence

Every dawn or after 24 hours have passed, roll a d20. On a roll of 1, an Otyugh (see the Monster Manual) emerges in a random empty 10x10-foot square through the bottom floor, in the basement, or from the ground outside at least 30 feet from you. It can smell the bag and will hunt you every turn, taking its turn directly after yours. If it finds you, it will attack until either you or it is dead.

Swarm Rules

For every new Stirge you release from the bag, it joins the others to form a swarm. Add the HP of the new Stirge to the existing swarm and grant it one extra attack. This way, you'll always have just one stat block that you update for HP and the number of attacks. Every time the swarm loses HP equal to the full HP of one Stirge, the swarm loses one attack. The Stirge swarm acts on your turn.

Notes: Swarm Rules: For every new Stirge you release from the bag, it joins the others to form a swarm. Add the HP of the new Stirge to the existing swarm and grant it one extra attack. This way, you'll always have just one stat block that you update for HP and the number of attacks. Every time the swarm loses HP equal to the full HP of one Stirge, the swarm loses one attack. The Stirge swarm acts on your turn. Every dawn or 24 hours have passed, roll a d20. On a roll of 1, an Otyugh emerges in a random empty 10x10-foot square at least 30 feet from you, It can smell the bag and will hunt you every turn, it takes its turn directly after youre turn. If it finds you, it will attack until either you or it is dead., Summoning, Utility