Erm's Electrify

You throw some copper dust into the air and with a few gestures sparks of electricity bolt between it. Then by guiding this electricity towards a creature of your choice you enhance it, electrifying its muscles.

The target creature's movement will be doubled until the start of your next turn, additionally the next melee attack it hits before the start of the caster's next turn will count as a magic attack and deal an additional 1d8 lightning damage.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the lightning damage increases by 1d8 for each slot level above 1st.