>>51131244Okay, to play devil's advocate, let us all pretend that it DOES turn Grass/Steel Ferrothorn into a monotype Fire.
In that case, WHY would you ever want to run a Firethorn? Fire is one of the worst defensive typings in the game. Aside from EQ spam and water attacks, you also get screwed by Stealth Rocks. Regardless of however Terastallizing works or not, using a Fire Tera Ferrothorn is a shitty idea either way.
