Possible Clues:

• Does this provide you with the last at first?
• So to invest might be the death of you, by the sound of it
• Invest - supply
• Freaky nude given drug to add character
• Provide with last at first
• To provide with this one would need U to make it
• Invest in French fitting
• Endow (poetic)
• Invest with power
• As a result you decide, finally, to invest