Adrenaline

You use your knowledge of blood magic to boost a targets life force. 

Choose a willing creature that you can see within range. Until the spell ends, the target gains Temp HP equal to (spell level) x caster’s level in blood mage, it has advantage on Strength and Constitution saving throws and checks, and it gains an additional action on each of its turns. That action can be used only to take the Attack (one weapon attack only) action. 

When the spell ends, the target must make a DC 14 constitution save or take one level of exhaustion unless spell is recast.