Spirit Medium

You have some special connections with the spirits of the dead and you know how to use them. You gain the following benefits:

• You have advantage on any Intelligence (Arcana) or Intelligence (Religion) check you make to remember or research information about spirits and the afterlife.
• You learn the speak with dead spell and can cast it once without expending a spell slot. You regain the ability to cast it in this way when you finish a long rest. You can also cast this spell using spell slots you have of the appropriate level. Charisma is your spellcasting ability for the spell.
• You gain the ability to contact the spirits of the dead, but only if you know their name. Make a DC 10 Charisma check. On a success, you have evoked the spirit and can ask it questions for 1 minute. The spirit must answer your questions to the best of its knowledge with a short phrase, a cryptic rhyme, or an omen. When the contact ends, make a DC 10 Constitution savimg throw. On a failed save, you gain one level of exhaustion. If you use this ability twice or more before you finish a long rest, then the DC increases by 5 for each time you use this ability after the first use.