LogFAQs > #937355740

Yes, IVs and Natures are the same. When the game first launched there was no in-game feature to see your Boon/Bane. As a result, IV calculators were made.

Promoting a unit to a higher rarity level removes its merges. So don't do that. You need to promote both units to 5* before merging them.

There are actually a bunch of layers to a perfect unit:
1. They need to be 5*
2. They need the right boon (bane doesn't matter)
3. They need to be merged to +10 (so that's 11 units total. Base and 10 merges)
4. You need to give them a bunch of Dragonflowers (5 levels for most units, 10 levels for older Infantry units)
5. You need to give them one of the 8 different Blessings
6. Deck them out with inherited skills
7. Ally Support (Find another unit to pair them with)
8. Summoner Support (only 1 unit at a time. 3 if you pay money for FEH Pass)
9. Might as well give them an accessory while you're at it

Yeah, Skills are like a movepool. Even the weapon slot is technically called a Skill. Not every unit can learn a particular skill so make sure you know what the restrictions are.

It's definitely worth using 5* units that aren't perfect. This is a gacha game. Unless you are throwing thousands of dollars at the game, you have to work with imperfect units.

I never really look at the Hero Catalogue. I'm pretty sure it shows all the units you've ever collected even if you don't have them anymore.
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