One in the Chamber

Everyone should know about this build by now. I feel like this build can be played a lot more like Raynor, flank when you can, otherwise stand behind your tanks and weave your spells and attacks.

Level 1

Longshot: Preferable choice, for easier poking

Tactical Espionage: Another strong choice, allows you to sit in a lane and harass. Great against enemy comps with more sustain or long objective fights like Eternal Conflict/Dragonshire

Advanced Cloaking/ Covert Ops: Useful but not my first choice. I'd really only go Advanced Cloaking if you plan on getting Ghost Protocol. Covert Ops is amazing for early ganking or peeling for your team, but with this build you spam pinning shot so it doesn't synergize as well.

Level 4

Rapid Projection: Is the best option really, more casts for more crits/skill blocks.

Level 7

One in the Chamber: Gives you good damage!

Level 10

Precision Strike: Short cooldown, zoning potential, can't be blocked, and it's global!

Triple Tap: I believe this talent is even less desirable since Nova's core functionality isn't just about making picks anymore. That being said, if you need to make picks and don't have the team to set up precision strikes it has it's place. I think a shorter cooldown would make this more desirable.

Level 13

Double Tap: Best option. More damage/control for you and your team.

Explosive Round: This talent gets a lot of hate but it's the only way for Nova to wave clear. The AoE is actually fairly large.

Level 16

Crippling Shot: Only real option, it benefits the team with you spamming and gives you the best damage.

Level 20

Precision Barrage: Gives you a lot more flexibility with two charges.

Rewind: Might be more single target burst, but requires more time auto-attacking.

Ghost Protocol: Haven't used this much, but comboing it with Advanced Cloaking makes a great escape. I have found it useful if the enemy dives you as soon as you come out. Helps you fight late game and hold your ground a bit longer.

Snipe Master

By going Snipe Master you are sacrificing any potential of doing siege damage. The trade off is you can play a bit safer by running in and out of battle and have the potential to do lethal burst damage. If you run Explosive Round against a team that clumps, you can put out serious hero damage.

Level 1

Covert Ops: I really, really like this talent. It slows down the enemy, perfect for ganking which is what you do. It's significant enough to help peel for your allies or even save yourself when caught out. The best part though is, it makes landing your snipe incredibly easy, which is important for snipe master.

Other choices: Viable, same reasoning as the One in the Chamber build.

Level 4

All: Whatever suits your situation. Shorter cooldown can be good to block Li Ming Orbs more frequently. Increased duration tricks enemies easier. Increased sight/cast range also has it's uses.

Level 7

Snipe Master: Brings back some of that Nova burst!

Level 10

Precision Strike: Preferred. Same reasoning as One in the Chamber build.

Level 13

Explosive Round: I feel the other two talents don't provide anything mandatory. I like this talent because it is just extra damage when the enemy team groups up.

Psionic Efficiency: No more mana problems! Great when you need to sustain.

Level 16

Crippling Shot/ Perfect Shot: This is a toss up, Crippling provides a vulnerability for your entire team, but Perfect shot rewards your Snipe Mastery even more, combines with Explosive Round and you'll be pumping out a lot of damage.

Level 20

Same as One in the Chamber build. Although Rewind is less attractive with your short cooldowns.

Explosive Decoy

This is still an experimental build for me, but I think it's pretty fun. You don't sacrifice too much damage, however it becomes less focused, having to rely on clones. The appeal is if your team needs more siege damage, you and your clones are can pull out some decent AoE damage with Explosive Round.

Level 1

Covert Ops: Better gank/peel

Other choices: Viable, same reasoning as the One in the Chamber build.

Level 4

Rapid Projection: I find it better to have an on-demand clone than one who will last longer. Also synergizes with One in the Chamber.

Holo Stability: Also viable, for longer fights.

Level 7

One in the Chamber: The best choice, since this build is meant to give Nova the flexibility to wave clear and that's not efficient with Snipe Master.

Level 10

Precision Strike: Preferred. Same reasoning as One in the Chamber build.

Level 13

Explosive Round: Gives Nova and her clones wave clear capability (Once you get Lethal Decoy) and is the purpose of this build.

Level 16

Lethal Decoy: Throw this out and a snipe, you'll do some decent area damage.

Level 20

Same as One in the Chamber build.