The Porcupine is a divination card. A set of six can be exchanged for a normalShort BowShort BowBow Physical Damage: 6-16 Critical Strike Chance: 5.00% Attacks per Second: 1.50Requires Level 5, 26 Dex with six linked sockets and item level 50.
The Porcupine now also drops from Terrace [Verified on DivcordThis information has been verified by players on Divcord, the divination card discovery Discord server. Actual undocumented changes to drop locations may have occurred in a previous patch.]
Many divination cards that drop in maps now drop in additional map areas. In most cases their existing drop locations have not changed, and those cases have not been patch noted individually. Atlas reshuffles will mean that some of these locations will not be available in any given league, but checks are in place to ensure that every divination card available in maps always has at least one map present on the Atlas.
The Porcupine now also drops from Courtyard [Verified on DivcordThis information has been verified by players on Divcord, the divination card discovery Discord server. Actual undocumented changes to drop locations may have occurred in a previous patch.]
Many Divination Cards have had their drop weightings and locations adjusted. You should now find a better variety of cards throughout areas introduced in The Fall of Oriath. Some maps which had several high-value cards have had some of those cards moved elsewhere.
As part of the removal of Cruel and Merciless difficulties, many divination card locations and weightings have been adjusted.
Now also drops from The High Gardens [Undocumented This change was not documented by any official sources. It was discovered through player testing or datamining.]
Drops from The Hedge Maze on Merciless difficulty, Gardens MapGardens MapMap Level: 72 Map Tier: 5 Guild Character: JVibrant colours dash across the grey, consuming Man's work.Travel to this Map by using it in a personal Map Device. Maps can only be used once. (at that time known as Terrace Map; the current Terrace MapTerrace MapMap Level: 80 Map Tier: 13 Guild Character: ðA garden on a stone pedestal. An incredible, and foolish, feat.Travel to this Map by using it in a personal Map Device. Maps can only be used once. at that time known as High Terrace), Orchard MapOrchard MapMap Level: 75 Map Tier: 8 Guild Character: <The fruit that grows from bloody ground tastes sweetest.Travel to this Map by using it in a personal Map Device. Maps can only be used once. and Tropical Island MapTropical Island MapMap Level: 76 Map Tier: 9 Guild Character: ÛThe temptations of paradise draw forth the good and the bad alike.Travel to this Map by using it in a personal Map Device. Maps can only be used once. [Undocumented This change was not documented by any official sources. It was discovered through player testing or datamining.]
References
↑eXeAmarantha (December 23, 2016). "The story of The Porcupine". Path of Exile subreddit. Retrieved December 24, 2016.