That sounds good but I say have his tar just ignite with his fire, creating a big firepatch. Like he feels bad at anything other than pve. If he doesn't have an ally to cc for him he gets killed quickly.
Infernus is too weak in the early game that if you wind up in a solo matchup, you'll get bullied out quickly. Esp against someone who can push harder. Imo his tar ability should ignite on burning targets and spread the dot around.