Papyrus Scarab

Type	Accessory
Tooltip	Increases your max number of minions by 1; Increases your summon damage by 15% and the knockback of your minions
Rarity
Sell	5 GC
Research	1 required

The Papyrus Scarab is a Hardmode, post-Plantera accessory that combines the bonuses of the Necromantic Scroll and the Hercules Beetle. When equipped, it increases the damage of summon weapons by 15%, increases their knockback by 2, and increases the player's maximum number of minions by one.

Crafting

Result	Ingredients	Crafting station
Papyrus Scarab	Necromantic Scroll Hercules Beetle	Tinkerer's Workshop

Despite the tooltip implying that the accessory boosts knockback of minions only, it also affects sentries and whips(Desktop, Console and Mobile versions).
The Papyrus Scarab stacks with both its ingredients.

The Papyrus Scarab's name is based on two things commonly referred to in Ancient Egyptian lore: the scarab beetle, and the papyrus being the leaf that Egyptian scribes used to write upon.