User blog comment:Justbeho/SQUAD BUILDING HELP IS HERE!!!/@comment-27375031-20151210043552/@comment-27068645-20151211015612

Imma guess that 154 cost is normal (aka 300 cost in trial)  if not, ask again XD

TBH, you can use any 7* you want, but if you really want one...

Bestie lead (hp up)

Krantz (with BB boosting sphere like other than evil shard)

Nadore (spheres that negate element damge? or hp up)

Yuura (boost parameter when full BB, hp up)

Ultor (SBB only if possible) (his sphere and possible damage reducing sphere)