Derez All Star 1 Mercy Build

First off, apologies for formatting and typos, I wrote this on my phone. I put a TL;DR at the end of it's too much of a read - I'm yo-yoing at around 50% All Star 1, hoping to reach legend but it's a grind I've mainly played solo.

Mercy Scaling & Early Game Strategy

Mercy scales off attack damage increase and attack speed increase — the key start to this build is cash farming.

Don't get baited into thinking 1 purple item is better than 2 blue items — most of the time it isn't.

Theory

Mercy heals

Mercy’s healing per second is 60 by default. Both attack speed and weapon power (damage) increase your healing output.

If you boost only attack speed, you heal more often.

If you boost only weapon power, heal is stronger.

Both give you the same benefit when used individually.e.g. 10% attack speed will heal for 66 per second and so will 10% weapon power

However, when you combine attack speed and weapon power, the effect multiplies, not just adds. So if you boost both by 10%, you heal for 72.6 per second, not 72 — meaning attack speed becomes slightly more valuable in combined builds.

This is why pairing both together is so effective.

Powers

Threads of Fate – Boosting two people nets you more stadium cash early on, more assists, and more heal/boost output

Crepuscular Circle – Boosting everyone and going pew pew is a no-brainer

Remaining powers are situational and I will cover these later.

Starting Round Items

Compensator (Green – Weapon) – 5% weapon power

Weapon Grease (Green – Weapon) – 5% attack speed

First Aid Kit (Green – Survival) – 25 shields, reduce the time before your life begins regenerating by 33%

Round 2 Items

After Market Firing Pin (Blue) – 10% attack speed & 5% move speed

Advanced Nano Biotics (Blue) – 5% weapon power and gain 10% attack speed after healing an ally (remember what we said above)

If you have excess cash, buy Armoured Vest (Green – Survival). If you're feeling rich, pick up Vital-E-Tee (Blue – Survival).

Round 3

Choose one of these:

Amari's Antidote (Purple – Weapon) 25 Health, 15%. While healing an ally below 50% life with your weapon, deal 15% increased weapon healing

Chain Evoker (Purple – Survival) 50 Armor, 5%. Staff damage boost, 15% Ultimate Charge from Damage Boost

It’s doubtful you can afford both — pick one depending on the situation If your team is pressured: Amari If you have a strong DPS carrying: Chain Evoker

You can sell any green items to get these, but do not sacrifice your Firing Pin or Nano Biotics — they scale too well together.

Round 4 / 5 / 6 – Core Build

Pick up the Chain Evoker or Amari (whichever you missed).

Your build should now begin to look like this (Core Build):

After Market Firing Pin

Advanced Nano Biotics

Amari's Antidote

Chain Evoker

Depending on cash flow, you may have gotten here by Round 4 — so I'll merge the next parts with Rounds 5 and 6.

Situational Add-ons

Cushioned Padding (Blue – Survival) If there’s any CC (e.g. Junker Queen’s ult) –40% negative effect duration, plus 10% life restored on stun, sleep, or hinder

Iron Eyes (Blue – Survival) If there’s a lot of hit-scan – 20% less damage from critical hits

More Expensive Picks

Divine Intervention / Martian Mender – Defensive pick, shuts down Genji bursts Caduceus Ex – Great on long maps, allows healing from distance rather than going tankier

Remaining Powers

Distortion If you have a damage-heavy team, always take this as your 3rd power Boosting 20% damage with Chain Evoker + 20% lifesteal is crazier than you think

Serenity If you're being dived a lot, Serenity can save you — 20% extra self-healing is massive

Equivalent Exchange Often my round 6 power to turn the tide in the final round Judge this based on the match: What’s my average number of resurrects per round? How many insta-nukes are happening? Can I recover a whole team fight?

Renaissance If there are a lot of single deaths or exchange trades, this becomes great Amazing to rez and fly away mid-chaos

End Game – Final Choice items

Advanced Nano Biotics and Firing Pin are considered core — but eventually, more expensive items become better choices

This now comes down to personal choice and preferences

Top Purple Item Picks (Situational)

Blessed Boosters – If you're being dived, it can save lives

Booster Jets – Get attack speed back and 20% move speed; great for Mercy cooldowns

Nebula Conduit – Pairs well with Serenity. Damage over time is neutralised by self-healing. Combine with Martian Mender for great defensive synergy

Finally don't be mindless

Ask yourself: Do I need more healing for prolonged fights? Or do I need to be tankier to survive them?

TL;DR – Core Build Summary

Core Items (in order of priority)

After Market Firing Pin (Blue – Weapon) – +10% attack speed, +5% move speed

Advanced Nano Biotics (Blue – Weapon) – +5% weapon power

Amari's Antidote (Purple – Weapon) – +15% healing below 50% HP

Chain Evoker (Purple – Survival) – +50 Armor, +staff damage, +15% Ult charge from boos