Possible Clues:

• Lucky charm or talisman
• They go to 18 down and may have set fire to the confused giants
• A drug smuggler needs time and charm
• How charming to get at about one so cross and obstinate!
• A stubborn person takes time to develop charm
• Aga left Guatemala replacement charm
• Lucky ornament
• A shoe with heel in whatchamacallit? That's charming!
• Lucky to be wearing something so cross before tea
• A Greek character allowed to have charm