Aggro decks in Kaladesh Standard: UW and UR

Beside existing aggro deck types, I 'm really scared of two cards: Smuggler's Copter and Voltaic Brawler

How to beat them?
Copter is immune to sorcery and some Planeswalkers - Liliana, the Last Hope, Dovin Baan can't target it, and it dodges Declaration in Stone, Ruinous Path, Planar Outburst, Fragmentize, to mention but a few.
Maybe we main deck Nahiri, the Harbinger? Grasp of Darkness?

Horror starts to escalate if Copter's unchecked for 3-4 turns:

In Spirits Deck:

Turn 1: Mausoleum Wanderer

Turn 2: Smuggler's Copter

Turn 3: Cast Selfless Spirit/leave 2 mana for counter spells/Rattlechains, then Copter attacks for 3 damage. (3 Damage)

Turn 4: Copter attacks for 3, loots you cards; the other spirit attacks for 2. (Total 5 damage.)

Turn 5: While attacking with copter, you still have mana for counter spells, Spell Queller/Reflector Mage/Archangel Avacyn etc. (Another 5 damage)

We can see how deadly Copter is on turn 5: 

1. Selfless Spirit, Mausoleum Wanderer and Revolutionary Rebuff lock down opponent's massive removals.

2. Copter keep attacking for 3 and looting.

3. Any better burn spell wins the game.

UW Spirits:


Reflector Mage 4
Mausoleum Wanderer 4
Smuggler's Copter 4
Rattlechains 4
Selfless Spirit 4
Spell Queller 4
Archangel Avacyn 3


Declaration in Stone 3
Revolutionary Rebuff 4
Negate 3

Island 7
Plains 7
Port Town 4
Prairie Stream 4

You needn't care much about late game, just counter everything opponent's spells threatening your Copter.

Voltaic Brawler, a more independent attacker, can attack on its own. I think we may put it in a Tri color deck, like Jund aggro. I'm trying to design such a deck. Will post it later.