Use Orbs of Path of Exile 2 Currency Chance

You can use an Orb of Chance on a normal (white) body armor.
This has a very low chance of transforming it into Tabula Rasa.
There are currently over 60 unique body armors, so it's still a gamble.

Tips:

Use on cheap, white armor bases to avoid costly losses.
Do this method in bulk- buy Path of Exile 2 Currency to exchange a stack of Orbs of Chance and try en masse.

3. Trade with Other Players

Visit the official Path of Exile 2 trade website.
Tabula Rasa is a highly sought-after item, so expect to pay a premium.
At the time of writing, prices range around 130 Divine Orbs or more.

Pros: Instant access, no RNG
Cons: Very expensive

How Tabula Rasa Changed from Path of Exile 1

In PoE 1, sockets were used for skill and support gems, making Tabula's six white sockets perfect for build flexibility.

In PoE 2, active skills are now bound to weapons, and armor sockets are used for passive abilities and bonuses. That means:

Tabula Rasa is no longer required for skill gem linking.
It now serves niche purposes- builds that benefit from many passive socket links early or POE 2 Divine Orbs for sale as placeholder gear.