This is my favorite aggressive deck in Modern currently. It plays a variety of mana dorks to accelerate into cards like Elvish Archdruid and Ezuri, Renegade Leader. Splashing black in our deck gives access to Shaman of the Pack which can let us kill our opponent through a stalled board. In games that go a bit longer this configuration of Elves can also generate card advantage with Collected Company and Lead the Stampede.
I have a full primer on this deck you can read on CoolStuff Inc here.

Creatures (35)
4
Boreal Druid
1
Elves of Deep Shadow
4
Elvish Mystic
4
Heritage Druid
4
Llanowar Elves
4
Dwynen's Elite
4
Elvish Archdruid
4
Elvish Champion
2
Ezuri, Renegade Leader
4
Shaman of the Pack
Spells (8)
4
Once Upon a Time
4
Collected Company
Lands (17)
2
Blooming Marsh
4
Cavern of Souls
3
Forest
4
Gilt-Leaf Palace
3
Nurturing Peatland
1
Pendelhaven
Cards (60)
Sideboard (15)
3
Collector Ouphe
4
Damping Sphere
3
Dismember
3
Lead the Stampede
2
Reclamation Sage
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