Chameleon's Mantle

You temporarily blend into your surroundings, gaining a +2 bonus to Dexterity (Stealth) checks and giving all checks to perceive your presence disadvantage while you remain motionless. If you move or take an action (other than casting a spell with a somatic component), the spell ends.

At Higher Levels:

When you cast this spell using a spell slot of 2nd level or higher, the bonus to your Dexterity (Stealth) checks increases by 1 for each slot level above 1st.