[msarchet]

I was looking at the advanced options, and specifying Name, Mana Cost and Type don't seem to do what I expect.

Example:

Fire Bomb 2R Instant

the mana is loaded as 2R instead of 2(Mountain Symbol) and the name/type don't seem to line up with what is generated.

Is there something I am missing here or do those inputs just override what is on the card?

[nick_ok]

you need to put mana cost as {2}{R} !