Diabolical deal with The one who slumbers sealed beneath

You have made a deal with The one who slumbers sealed beneath, Granting you the following benefits:

• You have advantage on initiative rolls.
• You gain learn the spells: True Strike, Gentle Repose, Haste, Freedom of Movement, Contingency, Foresight, and Time stop and can cast them as if they were Wizard spells, You must have the appropriate leveled spell slot to cast spells this way.
• Precognitive Insight (3/Day). When you or a creature you can see makes an attack roll, a saving throw, or an ability check, you can cause the roll to be made with advantage or disadvantage.

• Glimpse the Temporal Flood (Recharge 5–6). You can target one creature within 120 feet of you that you can see. The target takes 4d8 psychic damage, and it must succeed an Intelligence saving throw or be stunned until the end of its next turn the DC is 8 + your proficiency bonus + your Intelligence modifier.