What to do with credits
At the moment I have about 465 credits - not much but I haven't been saving for long. Should I buy 3 featured crystals e.g. GG crystal, buy a crystal sample bundle, spend them on arenas (normally what I go for), save up for 500 for 5 premiums, or save up to 1000 for a special offer (marvellous crystal etc.)? Advice please. Thanks