Elephant Reservoir (Selesnya Control) (Modern) [Revision 3]

The Combo:

Tap Llanowar Elves for G. Then play Greenbelt Rampager with this mana. Greenbelt Rampager entering the battlefield triggers Intruder Alarm so Llanowar Elves gets untapped. Greenbelt Rampager entering the battlefield also gets us one life if we have Aetherflux Reservoir. Then Greenbelt Rampager itself triggers and we take him back into our hand getting one energy counter which we can sink into Architect of the Untamed tokens.

As we now have Greenbelt Rampager back in our hand and Llanowar Elves untapped.This can continue an unlimited amount of times, getting us infinite energy we can make infinite 6/6 beasts with and life, if we have Aetherflux Reservoir out, to oneshot our opponent.

Now this is a neat combo but we also have to think about how quickly it can be assembled.

The perfect draw includes:
1 Llanowar Elves, 2 Forest, 1 Hinterland Harbor, 1 Intruder Alarm, 1 Aetherflux Reservoir, 1 Greenbelt Rampager

T1: Forest, Llanowar Elves
T2: Hinterland Harbor, Intruder Alarm
T3: Forest, Aetherflux Reservoir
T4: Greenbelt Rampager and win. If the opponent disrupts us there we have Mana Leak for protection.

This is a T4 combo and Mana Leak is only required if the opponent is intervening in our gameplan, which is not always going to happen.

As a perfect draw is probably not going to happen often we have Thirst for Knowledge to dig for our pieces. And again Mana Leak and Quench to disrupt our opponent.