To be honest, Timid is probably the least workable nature Goodra can get, except maybe Jolly. However, the key word is workable. A timid Goodra has the potential to catch opponents of guard by running a Choice Scarf set, and it is especially surprising because most Goodra don't run any speed investment at all.
Goodra @ Choice Scarf
Ability: Sap Sipper
EVs: 4 HP / 252 Sp Atk / 252 Spd
- Draco Meteor
- Fire Blast/Flamethrower
- Sludge Wave
- Focus Blast/Thunderbolt
This set is rather unconventional, especially as your Goodra, lacks a maximum speed IV, so you may want to breed for another nature, and try to also obtain maximum defense, but this set still can work if used right.