The Gobfather

You are bequeathed an increasing number of goblin minions for you to command from a deity of the goblin pantheon.

Expanded Spell List

The Gobfather lets you choose from an expanded list of spells when you learn a warlock spell. The following spells are added to the warlock spell list for you.

Gobfather Expanded Spells

Spell Level	Spells
1st	burning hands, command
2nd	calm emotions, silence
3rd	call lightning, conjure barrage
4th	stoneskin, wall of fire
5th	conjure volley, destructive wave

Promoted to Manager

Starting at 1st level, you gain the thornwhip cantrip.

Additionally, when you cast a leveled spell, you magically summon a number of goblin minions equal to the level of spell.
The goblins act on your initiative, are loyal to you, and follow your commands but will disappear after 1 minute.
You can do this a number of times equal to your proficiency bonus per long rest.

Bonus for Downsizing

Starting at 6th level, when you kill one of your summoned goblins (be it incedental or intentional), you gain 5 temporary hitpoints for each goblin you kill.
These temporary hitpoints can stack up to a maximum of 5 times your proficiency bonus.

Working Overtime

Starting at the 10th level, your summoned goblins remain until you start a long rest. Your summoned goblins weapon attacks also become magical for the sake of overcoming resistances.

In addition, your summoned goblins can no longer be charmed or feared by any creature other than you.

Severance Package

At the 14th level, as an action, you can choose a number of summoned goblins equal to your proficiency bonus to simultaneously move up to their speed and explode, dealing 2d8 cold, fire, or thunder (your choice) damage per goblin.

Once you use this feature, you can’t use it again until you finish a long rest.