Isaac turns into Bob after picking up three distinct items in the following list. In this form, Isaac gains a green trail of
poisonous creep that deals 2 damage per tick or 6 damage per second, and becomes immune to Poison.
Bob's Rotten Head
Reusable ranged bomb
Upon use, Isaac holds a
poison bomb which can be thrown in the cardinal directions and explodes on impact.
familiar that charges forward when shooting tears and explodes upon contact with an enemy, damaging and poisoning them. The familiar respawns after a few seconds.
+5 poison bombs
bombs and grants Isaac's bombs a poison effect. Gives Isaac immunity to poison.
Replaces tears with explosive and
poisoning projectiles fired in an arc from the mouth.