Board Thread:Questions and Answers/@comment-26543041-20150629050052/@comment-26443583-20150629192434

Hard to say but before u hit trial lvl simple status spheres should be enough. If u have any sphere frogs or imps u can use them bz your units are quite good (especially those with 7 forms). Dont use burst frogs if not necessary bz units lost half of therir bb lvl when evolve (its better to wait until unit achieve final form). If some of your units have 2 slots for second sphere suggest bb speheres like miroku pearl, sol creator or evil shard, exception is second sphere for Nebula (she need some negate status sphere for herself). When u get stronger team u can try to get something better from harder vortex missions. But for now best thing is lvling up and evolving unit to their better forms.