Level 1|Tier 1
(!)Seasoned Blademaster - Every hero kill near you permanently increases your attack damage by ~2. When you hit 30 attack damage, increase your attack speed by ~25%.
Burning Blade - Burning Strike's damage over time is now ~80.
(!)Critical Master - Every critical strike you perform increases the damage bonus by ~1%, stacking 50 times. When you hit 50 stacks, double this quest's bonus.
Level 4|Tier 2
Wind Sprint - Wind Walk now causes you to move 40% faster, rather than 20%.
Mirror Resilience - Mirror Images now only take 150% damage.
Blade Mastery - Burning Strike now deals ~50% additional damage if it's a critical strike.
Level 7|Tier 3
Honed Attacks - Wind Walk's critical effect is now 75% of a critical on two strikes.
Blademaster's Momentum - Every basic attack reduces your basic ability cooldowns by ~0.5 seconds.
Mirrors of Grandeur - Mirror Images now last for twice as long.
Level 13|Tier 5
Critical Frequency - Critical Strikes now occur on every 3rd basic attack.
Sharpened Mirrors - Mirror Images now deal 25% of your damage, and can cast your abilities.
Burning Cleave - Burning Strike now cleaves for 50% damage to two nearby enemies, prioritizing heroes.
Level 16|Tier 6
House of Mirrors - Mirror Image now makes 3 images.
Windrunner - Wind Walk gains a second charge.
Blazing Flurry - Burning Strike gains an additional charge, and both charges are on the same cooldown. However, casting the second Burning Strike increases the cooldown by ~4 seconds.
Level 20|Tier 7
Whirling Death - Bladestorm now lasts an additional 3 seconds, and you now move at ~120% speed, rather than 80%.
The Best Defense - Devastating Parry gains an additional charge. In addition, both charges are on the same cooldown.
Mirror Crash - Mirror Images can now critical strike.
Heroes of the Storm Build Guides
Critical Master, Blade Mastery, Honed Attacks, Bladestorm, Critical Frequency, Blazing Fury, Mirror Crash.
I would go for this, for a really nice SURPRISE, CRIT! build. Love seeing those big numbers :P