Proficiency required: Mason's tools

Apprentice

You have learned how to attune stones to one-another, allowing for ease of communication. At the end of a long rest, you may choose to work on two stones, converting them into sending stones linked to each other. The stones lose their magic at the end of your next long rest.

Journeyman

You can coat yourself with building material, allowing you to weather the toughest blows. This process can be done at the end of a short or long rest; the next three times you would take bludgeoning, piercing, or slashing damage, you gain resistance to the damage dealt.

Master

Stone holds no secret from you, and you can easily slip into it as though it were water. You can cast the meld into stone spell, using Intelligence as your spellcasting ability modifier. You regain the use of this ability at the end of a long rest.

Grandmaster

You can summon great stone walls to help defend an area. You can cast the wall of stone spell, using Intelligence as your spellcasting ability modifier. You regain the use of this ability at the end of a long rest.