Tabula Rasa has 6 linked white sockets, but provides no defence values, even no base values of a Simple Robe.
(1) 6L means it excellent for skill gems and support gems.
(2) 6 white sockets accept any color gem.
(3) No level requirement
Tabula Rasa is a 6 linked white sockets unique armor, and very good for leveling. The item can be socketed with any color gems and can apply to character build without a defense required. Meanwhile, Tabula Rasa Item Level has no requirement. So, a beginner can build their character with the item easily when your level is below 80.
Since this unique item has no defense values, which refers to armor, energy shield, and evasion, it cannot slain monsters in high-level maps. After having completed Act 10 and entering to map, there is a -60% total penalty to all resistances. Therefore, farming in the maps will need more defenses.
The price of PoE Tabula Rasa is $2.52. Aoeah offers cheap price for Tabula Rasa with coupon “AOE”. In the trade marketplace, PoE Tabula Rasa is 34 Chaos Orbs. You can trade other currency items in exchange for it as well. Always recommended to exchange low-tier currency to Chaos Orbs, then trade for desired items. Chaos Orb and Exalted Orb play a crucial role in the trade market and can exchange most of other PoE currencies.
You can purchase 100 Chaso Orbs for $0.83 extra 3% discount with coupon "AOE".
Since there is no Tabula Rasa recipe, the simplest way is to farm "Humility" card. A set of 9 Humility can exchange one Tabula Rasa. One can also obtain this item by farming Cleanser of Sins and acquiring prophecy reward.
You cannot farm Tabula Rasa by slain monsters. Humility is the divination card for Tabula Rasa. I got it through The Aqueduct of Act 4 and The Blood Aqueduct of Act 9. Using Ctrl + Click open the area with a new instance and farming more time.
1x Cleanser of Sins + slain Undying Evangelist = Tabula Rasa
Cleanser of Sins is a Prophecy and having killed "Undying Evangelist" will reward to drop a Tabula Rasa.
The locations of Undying Evangelist: Act 3 – The Sceptre of God, Act 3 – The Upper Sceptre of God, Act 8 – The Grand Promenade.
Just adding a corrupted property and make Tabula Rasa could not be changed more.
(3–5)% additional Physical Damage Reduction while stationary
+1 to Level of Socketed Gems
(40–50)% increased Damage
+1% to all maximum Resistances
(4–6)% reduced Chaos Damage taken
(4–6)% reduced Cold Damage taken
(4–6)% reduced Fire Damage taken
(4–6)% reduced Lightning Damage taken
You take 50% reduced Extra Damage from Critical Strikes
+2 to Level of Socketed Duration Gems
+2 to Level of Socketed AoE Gems
+2 to Level of Socketed Aura Gems
+2 to Level of Socketed Curse Gems
+2 to Level of Socketed Trap or Mine Gems
+2 to Level of Socketed Warcry Gems
+2 to Level of Socketed Projectile Gems
(4–6)% increased maximum Life
(4–6)% increased maximum Energy Shield