Hive Host

A foreign colony has made its home within your body. Rather than consuming you, it has adapted to coexist with you, granting power in exchange for sustenance.

Ability Score Diminishment. Your Constitution score is reduced by 1.

Spread the Hive. At the start of your turn, you can release tiny hive organisms to feed on one or multiple willing creatures within a number of feet equal to five times your proficiency bonus (no action required). A target takes poison damage equal to your proficiency bonus, bypassing damage resistances and immunities. If the target dies from that damage, you don't gain a bonus from it.
Until the start of your next turn, you gain a +1 bonus to attack rolls and deal an extra 1d6 poison damage on a hit if at least one creature took damage this way. This bonus increases to +2 and 2d6 if three or more creatures took damage this way. You can use this feature a number of times equal to your proficiency bonus, regaining all expended uses when you finish a long rest.

Hive Resilience. You gain resistance to poison damage and become immune to being poisoned.