I hope you have TFT, since I can't help you with RoC.
1) You can edit buffs at the "Object Editor - Buffs Tab".
2) When u enter Bnet your
wc3 will be updated automaticly.
3) Firelord is a hero, I have no clue "how to get it" since I always had it, but if u have a fully updated TFT I'm sure you can find him at the "Object Editor - Units Tab".
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I suggest that u type your problems better in the future that way u can get a anwser faster.
And since it seems that you are a new user here:
Welcome!