Poppy

Strengths

Iron Ambassador tends to land near walls, try to take advantage of this with Heroic Charge.
Keeper's Verdict can be released immediately to send the enemy straight up, take advantage of this in duels.

Passive · Iron Ambassador — Poppy throws her buckler that bounces off the target. Poppy can pick it up to gain a temporary shield.
Q · Hammer Shock — Poppy swings her hammer, dealing damage and creating a zone that will slow enemies and explode after a delay.
W · Steadfast Presence — Poppy passively gains Armor and Magic Resist. This bonus increases when she is low on Health. Poppy can activate Steadfast Presence to gain Move Speed and stop enemy dashes around her. If a dash is stopped, the enemy is slowed and grounded.
E · Heroic Charge — Poppy dashes to the target and pushes it back. If the target is pushed into a wall, it is stunned.
Ultimate · Keeper's Verdict — Poppy channels a hammer strike that knocks enemies very far away.

A suggested 5-lane lineup built around Poppy, based on hero partnerships and role synergy — not win rate.