Bam, Turn! (Modern)

Complete stupidity happens when Hardened Scales and Sage of Hours are out together.

The combo mainly involves the three cards Hardened Scales, Sage of Hours, and Solidarity of Heroes.

T1:forest, Hardened Scales
T2:island, Sage of Hours
T3:Solidarity of Heroes

The combo works because Hardened Scales is unbelievably compatible with Heroic abilities that add counters. Play an instant that add counters to a creature and BOOM. The creature's Heroic ability goes on the stack, followed by Hardened Scales, and then the instant resolves which triggers Hardened Scales a second time!
So, let's put Sage of Hours in as our Heroic creature and Solidarity of Heroes in as our instant that put counters on. Fully explained, this is how it's done:
Play both Hardened Scales and Sage
Target Sage with Solidarity of Heroes
Sage's heroic triggers (total counters=1)
Hardened Scales triggers (total counters=2)
Instant resolves (total counters=4)
Hardened Scales triggers (total counters=5)
Activate Sage's ability

Now this combo can be pulled off as early as turn 3. This combo is easily compatible with any green mana ramp deck and a lot of new blue/green creature decks.

Casting Howl of the Horde makes the combo even more insanely stupid. After swinging with any creature you can cast Howl, it's Raid ability will trigger and then you can cast Solidarity of Heroes which will be copied twice for a grand total of doubling Sage's counters three times.
It'll go a little something like this:
Play both Hardened Scales and Sage
Swing with a creature
Go to second main phase
Cast Howle of the Horde
Cast and target Sage w/ Solidarity of Heroes
Howl of the Horde triggers
Howl of the Horde's Raid ability triggers
Solidarity of Heroes is copied twice
Sage's heroic triggers (total counters=1)
Hardened Scales triggers (total counters=2)
1st instant resolves (total counters=4)
Hardened Scales triggers (total counters=5)
Target Sage w/ Solidarity of Heroes#2
Instant resolves (total counters=10)
Hardened Scales triggers (total counters=11)
Target Sage w/ Solidarity of Heroes#3
Instant resolves (total counters=22)
Hardened Scales triggers (total counters=23)
Activate Sage's ability
Enjoy your next 4 turns or your 24/24 creep!

I tried to build a deck around the main combo. Any and all help is appreciated, thanks!