My advise:
- Wait for events where you can buy stuff with better value (like lucky board)
- Dont buy seal scroll because it is not efficient and you do not need it at lower level
- Focus on magatamas (get atleast all your ninjas to lvl 4 magas)
- If you can Buy ingot everyday, do 50 everyday and spin the lucky wheel because it gives additional spin (it is good for your ingot value, for 20 ingot you can get atleast 40 coupon to 100 coupon that is 600 ingot for 1200 coupon to 3000 coupon per month)
- This is optional, but you c*e 10 ingot to buy the first 50 stamina, succeeding stamina is just too expensive.
- Dont use ingot to buy lucky runes (just use the first 4 chances which is free)
- Wait for event to use/recharge ingot