How do you give Ferroseed both Leech Seed and Knock Off as an egg move? (Pokemon SW/SH)?

Question

Trying to make a competitive Ferrothorn set with Leech Seed/Knock Off/Gyro Ball/Spikes with Sassy nature. However, Leech Seed and Knock Off are egg moves for Ferroseed, and while scrolling through the egg move page for Ferroseed I saw that no parent pass down both Leech Seed and Knock Off. Is there any way to remedy this or am I stuck with one of the two forever? (Please note that I am playing SW/SH and I have the DLCs)

Comments

That's strange. You could breed a Grookey with a female Rillaboom which knows Knock Off and a male Venusaur with Leech Seed. Then you breed a Ferrothorn with that Grookey (but make sure is male) then you should get it. I don't play the in game series so I don't know if this is true or not. Note that using that set isn't competitive, here is a recommended set:
Ferrothorn @ Rocky Helmet  
Ability: Iron Barbs  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
IVs: 0 Atk  
- Toxic  
- Leech Seed  
- Stealth Rock  
- Spikes

Because this isn't confirmed, I didn't put it as an answer.

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Yet another set destroyed by Taunt...

Answer 1

Luckily for you, there's a new feature in SwSH just for this situation.

First thing you need is one Pokemon with the first egg move and another Pokemon of the same species (evolutions or pre evos don't count) with the second egg move. For the one you want to learn the move, you need to delete one move so there is space for the one to be learned. Then put both in the daycare. I don't know if you have to wait a bit for the move to be learned, but you don't need to wait for an egg and they don't need to be different genders, as long as their the same species and one has an empty slot.

Source: Experience and https://bulbapedia.bulbagarden.net/wiki/Egg_Move#Pok.C3.A9mon_Nursery_transference

Alternatively, just have the mother have the first egg move then breed with the father with the second egg move, for example for example tangela with knock off and ferrothorn with leech seed.

Comments

Only reading this now and got a bit confused at first until I got it. Thanks a lot, will be trying this tomorrow since I need to catch up on sleep