Something like that is far too powerful to be used for revenge, with unlimited power at your disposal and blinding anger clouding your judgement, I don't want you to do something you'll regret.

I care about Tom, but I care about you as well! I’m doing this to protect you, not to fight you! You don’t have to do it alone! Why can’t the three of us be there for each other and make our stand together on the battlefield!

If you don’t need our help, by all means: take the Emerald and leave. But heed my final warning, Hedgehog. Vengeance doesn’t right wrongs; revenge doesn’t change the past. A wise warrior can channel his anger into power. A foolish warrior allows his anger to overpower him. Don’t make any decisions you’ll regret.