It's impossible to have this Team in any game, since:

Megas only exist in Gen 6 (XY ORAS) and 7 (SMUSUM)
Strength can't be taught to Blaziken in Gen 9 (not even transfered)
Hidden Power is always Super Effective (ZA), or can't be used at all (SwSh SV)
Iron Tail can't be taught to Glaceon in Gen 9 (not even transfered)

So to actually use this team I'd have to either:

Replace Blazikenite, Strength, Iron Tail, and the specific Hidden Powers

or

Use an earlier Gen (like 6 or 7), which leads to

Fairy Feather doesn't exist, but can be replaced with Pixie Plate (🦙)
Blaziken can't learn Uproar untill Gen 9
Snowscape doesn't exist, but can be replaced with Hail
Glaceon can't learn Freeze-Fry untill Gen 8 (SwSh BDSP)


Considering I don't have a Switch (unless these count 🇫🇷🇸🇩), I could just find a replacement for Uproar and Freeze-Fry since I do have a new3DS where I can play for real

So I replaced Uproar with Hyper Beam, and Freeze-Fry with Ice Fang

I also fixed the IVs but that's not in the pics