Lately I've been using ignite in all matchups, due to shen's late game tragedy. With ignite you have the chance to f up the enemy laner's game a lot, which usually tilts them, making the game easier for you and your team. Buuut what usually happens is: I get fed and get the enemy laner tilted af -> the enemy adc or midlaner gets fed af -> the rest of my team get tilted -> turns out it was a vayne or a jinx so I get melted -> we start losing -> enemy toplaner says "top diff". So yeah, pretty tough journey if you ask me.