Honing both your body and your mind to new extremes, you gain the following benefits: 

• Your unarmed strikes use a d4 for damage
• You learn the absorb elements and detect magic spells, and can cast them both once without expending a spell slot or using components. You regain the ability to cast them in  this way when you finish a short or long rest. Wisdom is your spellcasting ability for these spells.