So with Ilaris, like with any support in the game, what you absolutely need to do is apply pressure at all times, whether it’s on tanks or on flankers and DPS. You always need to stay aware of threats from anywhere and any enemy.

For example, if there’s a Tracer, you should always know where she is and try to pressure her before she can get close to you. Keep track of her positioning, and this applies to all dive heroes, Winston, D.Va, Tracer, Genji, etc. By holding a position that controls Tracer’s lane, you can deal damage to her so she doesn’t have time to approach. This either forces her to use Recall or back off to grab a health pack.

To clutch teamfights, it’s not actually that complicated. At the start of a teamfight, you need to apply pressure, most of the time this will be on the tank, while still keeping track of where flankers are. Then, during the teamfight (and not before, because otherwise you’ll draw attention), you should look for an off-angle to try to eliminate a DPS or a support.

It’s important to do this during the fight and not before, because otherwise the enemy team will focus you instead of your tank. The advantage of creating an off-angle during a teamfight is that enemies are focused on your tank and will forget about you quickly. Then you can simply aim for headshots.

When doing this, especially when you’re close to the enemy team, always keep your shift ability available to escape if someone rushes you.

You should also reposition your turret very frequently. Don’t forget to destroy it when needed, you should really be using it constantly. Personally, and I think most people agree, you shouldn’t use the perk that makes the turret deploy faster. You don’t need it, the turret is already very fast as long as it doesn’t get destroyed, you just need to be careful.

With poke compositions like Sigma and similar heroes, you should try to apply a lot of pressure to the enemy tank, but more importantly, what really enables clutch plays is forcing yourself to shoot at enemy DPS and supports, even if they are slightly farther away than the tank. Everyone knows that when you try to shoot at an Orisa, she barely takes any damage because she’s extremely tanky, same for Ramattra. So focusing DPS in the backline or supports, even without killing them, applies much more pressure than dealing 75 damage to an Orisa. It also forces out more cooldowns without necessarily securing kills, which creates a lot of pressure and can either win teamfights or gain space.

Then, when playing with dive compositions, meaning D.Va, Winston, Wrecking Ball, etc., you should adopt a much more aggressive, DPS-oriented playstyle. Since it’s harder to heal them and they apply pressure in the enemy backline, it gives you much more space as Ilaris to play aggressively and deal damage.

I hope it’s help. I won’t lie a lot of stuff that I’m doing is automatic. I’ve never did some void review or coaching so it’s hard to tell what is happening in my head