Minigame Ezreal is a really fun way to play support.

Things that make it work:

-Strong early/mid game

-Interesting gameplay

-Economic playstyle

-Good for baiting pick phase

Early game

The early game you play very safe.

The key objective is to farm as much gold as you can with klepto and spellthief's.

Focus on this first and see how good your enemy is.

This will also disrupt the enemy in farming making mistakes more often and even if you cant poke try to feel present.

Economic play style

After a few minutes in game your should have enough for Frostfang and sheen.

With klepto, spellthief and future's market you should be able to buy these quite early. This will then increase your early poke with a lot giving your adc more space to farm, push lane, and be able to get early kills.

Pushing lane

If you push lane its with the objective to get armor plates off the enemy's tower. These will inturn increase your gold income.DO NOT FORGET TO WARD FOR THE LOVE OF GOD:).

Use your w for additional tower damage also with the proc from sheen/lich bane.

Spellthiefs/frostfang also gets gold from attacking towers.

After laning phase

After laning phase is over its important to keep all lanes push. Since you play ezreal you can do this from a safe distance and also with your ult. Try not to take farm from your team mates tho you are still the support.

Use your slow from rylais to slow down enemy's from comming closer to your carry's,

And poke tanks before fights so they dont get to tank for their own team.