Possible Clues:

• Surprisingly help a mere transient
• Short-lived, passing
• Leading characters of Elizabethan play are on edge - new Lear production is short lived
• Brief
• Fugitive's record with time in border line
• Short-lived help — a mere tinkering
• Temporary help arranged to keep me in period
• Not last like this
• Here maple's flourishing is short-lived
• A helper surprisingly assuming writer's brief