I'll outline the events, I think it's a bit vague if you don't have any knowledge beforehand.
1. Ameer stakes on a lot of accounts, lots of people are upset about this because he uses bots and steals a lot of their business.
2. After months of oppression a guy named "Frost" from a staking group tweets/emails jagex moderators with Ameer's rsns and has them investigated for botting. All of Ameer's accounts are permanently banned.
3. Frost and his crew brag about "taking ameer out" and gain recognition for the tweets.
4. Ameer in retaliation plots to scam Frost because of this major setback (20 accs/$10k+)
5. Ameer joins the teamspeak and offers to split stakes with frost versus a whale named "I pk bills" who is Ameer on another account. The account he is using to fight against "I pk bills" uses prayer/brews down before the stakes so Ameer has an extremely unfair advantage.
6. Frost ends up splitting his other friends in these stakes since he goes down a lot (They still don't know they are being scammed)
7. As a result tons of people are down to "I pk bills" and the scam has impacted many more people than the intended target Frost.
8. Eventually James who is splitting decides to Stat spy Ameer and finds out that he is scamming, word gets around. Over 15B, $30,000 at the time was scammed.
9. This conversation in teamspeak is Ameer explaining his scam months after the incident.