Lil Portal

Lil Portal is a passive item added in The Binding of Isaac: Repentance.

Effects

 * Summons a portal familiar that launches itself in the direction Isaac shoots to deal contact damage to enemies.
 * The portal will consume all pickups and trinkets in its path, converting them into blue flies and causing the familiar to become larger and deal more contact damage.
 * Lil Portal deals contact damage equal to (2x consumables destroyed count + 2), and ticks up to 10 times per second.
 * When the familiar consumes four pickups, it will summon a portal that leads to an unexplored room on the current floor and its damage bonus is reset.
 * The portal cannot lead to the floor's Devil Room/Angel Room, entrance to the alt-path, Black Market, or I AM ERROR Room.