Either have Aiz control it to stay in his hand or imbue it into Hestia Knife and have Aiz keep it there or constantly resupply it. I don’t know when she loses control of her wind though, if at all.
I don't even know why you think she can control anything. Her Ariel is a raging stream of wind. The best she's shown is to direct the flow in the right direction, and that still won't help the wind stay in Bell' hand.
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u/Otherwise_Finding_34 9d ago
Ottar can perform roughly the same attack and Leon can do even more
no one would let him charge for so long in pvp
Argonaut is charging for active actions, it can't charge a buff