Energy Transfer

Choose one creature within range. It gains 1d8 temporary hit points, and can use its reaction to make a single weapon attack; or cast a spell with a casting time of one action that is of a lower level than the level of this spell (without expending a spell slot); or move up to its movement speed. This movement does not provoke opportunity attacks.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the target creature gains an additional 1d8 temporary hit points for each slot level above 2nd.

This spell is from the DM's secret weapon issue #1 of 2022.