Mel

Strengths

Mel can reflect enemy projectiles, including powerful spells. Wait until she casts Rebuttal before throwing powerful projectiles her way.
The more Mel hits you, the more Overwhelm stacks she applies. If your health drops too low her next hit will kill you, so back off for a couple seconds to let the Overwhelm stacks fall off.

Passive · Searing Brilliance — Whenever Mel uses an ability, she gains three bonus projectiles (up to nine maximum) on her next attack. When Mel deals damage through an ability or attack, she applies Overwhelm, which can stack infinitely. If the enemy is hit by Mel with enough Overwhelm damage, the stacks are consumed to execute the target.
Q · Radiant Volley — Mel fires a barrage of projectiles that explode around a target location, dealing damage repeatedly to enemies within the area.
W · Rebuttal — Mel forms a barrier around herself that reflects enemy projectiles back at the attacker, prevents her from taking damage, and grants her movement speed.
E · Solar Snare — Mel fires a radiant orb forward, rooting those at its center while the area around it slows enemies and deals damage over time.
Ultimate · Golden Eclipse — Mel strikes all enemies marked with Overwhelm regardless of their distance from her, dealing additional damage for each stack of Overwhelm. Ranks of Golden Eclipse increase Overwhelm's damage.

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