[Lucrecia focused on reaching the top of the ladder, nodding once to Sephiroth as she passed him with tome tucked back in her pack. Once she was safely on deck, she called out as loudly as she could:]

Focus your attacks on the arms individually! Until we get them down the core will take no damage. Multiple-target spells only do half their normal damage. The right side has no weakness but is susceptible to all!

[Without being asked, she then casts Libra on the Left Side, and with her speed altered by Mad Scientist, the Core as well.]