Heal block should be helpful eh
if you can't kill him in 20 sec, you need to have a shock or incinerate or a passive heal block (from warlock infection, mysterio heal block or duped archangel neurotoxin) to stop him from healing. Nothing else will stop the healing.
Heal block should be helpful eh He is immune to manipulation of his regeneration. So No, Healblock won't help.
HUMAN TORCH. Guaranteed incinerate damage on Kang.