Get a 5* out, and use Five Star Twighlight
Go into 2 recital starling(not activating their on summon effects) and detach to get sapphire swallow and cobalt sparrow in hand(if you have 1 of them, add a DD Crow)
then use sapphire to summon cobalt and itself, cobalt on summon effect to add nervall.
link 2 borralblossom using both the xyz, activate it to ss nervall in the zone below borralblossom(leave co-link open)
you can go from there into whatever you want.