Beauty and the Beast? Chapter 17 - Fire Emblem Engage Anything Goes Maddening LTC

Chapter 17 cleared in 2 turns, leading to 36 turns so far in this maddening LTC by ‪@keb4007‬ and me. Credit to ‪@thebakaretsu‬ for the Louis drawing in the thumbnail!
This is the first of the three most challenging clears in the run, requiring an ultra strong Chloe to solo the top-left bosses and a well-trained Ivy to take care of the bottom-left enemies. Citrinne also needs to snipe Marni from 20 tiles away once again. This Astra Storm kill requires 52Atk, which could be much easier to achieve if Citrinne had inherited Momentum before Chapter 10. But we actually did not have enough SP at that time because Chloe needs Lance Power 3 for this clear to be a lot more reliable.
In Turn 2, if Ivy had missed her Thoron hit on Mauvier, then Kagetsu would take a counter attack from him in player phase. This would leave his HP low enough to be targeted by the frozen wyrm instead of Ivy. But it doesn't matter either way, since Alear's bonded shield covers both Ivy and Kagetsu.
Reclassing:
- Chloe to Lance Griffin
- Merrin to Berserker
- Timerra promoted and reclassed to Swordmaster
Key unit levels:
- Alear 1.88 (this can vary depending on how many times Ivy dodged enemy attacks, but we need 1.76 or above for future purposes)
- Chloe 10 lance flier / 4 wyvern / 8 sword griffin / 4.38 lance griffin
- Ivy 8.72
- Kagetsu 5.64
- Panette 4.6
- Citrinne 2.45
- Hortensia 2.9
Donation:
- Firene lvl4 for a little extra ingots
Blacksmith:
- Forge the Ike-engraved Radiant Bow to +4
- Forge Spear+4 and engrave with Lucina
- Forge Silver Axe+1
- Forge Tomahawk+1
- Engrave Elfire with Eirika
- Engrave two Lollichops with Byleth and Edelgard
Skill inheritance:
- Chloe inherit Gentility (one expert book, one adept book and one novice book used)
- Ivy inherit/upgrade to SPD+3
- Panette inherit Mentorship
- Alfred inherit Reposition
Cooking:
- SPD+4 meal, for Chloe and Ivy to double
Arena:
- Chloe*1 before reclass and Chloe*2 after reclass
Staff Expenditures:
- 1 Warp
- 1 Rewarp
Booster usage:
- Chloe: 2 robes (5 total), 2 drops (7 total), 2 wings (5 total), 2 books (6 total), 2 shields and 3 talismans
- Ivy: 4 dusts (6 total), 1 book