pact of the home keeper

through various means, you have made a pact with a possessed building. be it a small hut in the middle of the woods or a large castle you have gained ownership off, regardless this home has chosen you as its keeper, placing the task upon you to keep the home safe and happy. other particuler tasks might be placed upon you. the building may be a library with thousands of years of sacred knowledge that needs to be protected, or the home is obsessed with being clean and needs you to clean it every so often. sometimes the home may just be lonely and simply likes having people around. you and the home become connected completely giving you the power to pass through the walls and floors like they were air, the house will also telepathically tell you the exact location of everything within it. this includes items, creatures, people and anything that has corporeal form.

Home Merger

At 1st level you can merge into an inanimate object the size of your character to hide, when merged you can keep concentration on spells however you can not cast any additional spells. You are unable to move the object you are merged with. When merged you cant see however you are still able to hear, smell and feel your environment through the object you are merged with. If an enemy lands a successful hit you will be forced out of the object.

At 10th level, you can add your proficiency bonus to you AC when merged with an object

hollow door/window

At 6th level, you may create a door or window on any flat surface. the door allows you to walk to the other side of the surface like any normal door and the window can be completely seen trough on both sides or it can be one-sided, completely invisible on the other side.

transport home

At 10th level once per short rest you may teleport to your home patron, bringing anyone within 10ft with you if you so choose. You may also summon your home patron to any empty location it can fit in. average home size is 30-50ft in a square. 

room

At 14th level, you can create a 20ft translucent purple cube at a max range of 50ft away from you. The cube can be exited by any creature its created around however can not be entered. If a creature tries to leave the cube then the warlock gets an opportunity to attack on them, if the attack succeeds, the creature is dragged back into the cube. When a spell is cast on the cube, the cube is attacked, or any damage comes to the cube, the damage is done equally to all people inside the cube. This does also include allies.