Dreamstrider Absorb Elements

You can during someone else turn or on your own forgo your future reaction, bonus action, and half your movement speed next turn by casting Dreamstrider's Absorb Elements on someone else,

The spell captures some of the incoming energy, lessening its effect on the target and storing it for your next spell attack. Target has resistance to the triggering damage type until the start of their next turn. Also, the first time you hit with a spell attack on your next turn, the target takes an extra 1d6 damage of the triggering type, and the spell ends.

if cast on yourself it will just take reaction and be the next melee attack normally

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the extra damage increases by 1d6 for each slot level above 1st.