I love comeback stories, keep em coming 
Tonight I had one myself, playing as UB on Exile 4v4. They have us pushed all the way back to our citadel, all flags capped and with giants. We are stuck on warrank 9 stopping us from getting giants of our own, so we really need to cap some flags. Its 3vs3 at this time cause both teams lost a player.
We are locked in our base for like 7-8 minutes just defending against the hordes, taking turns runing to the crystal. They have a queen shielding, making it hard to break out or kill any of them, but we finally get the queen downed and I make a run for it, with 2 of them chasing me all over the map. They keep right on my tail so I cant cap any flags, but its working out fine because my teammate uses this opening to cap two flags and after 3-4minutes we get rank 10 + giants.
They push us back to the citadel again, and at this time another member of my team decides to quit making it a 3vs2.
The fight at our base is a bit more even now that we have giants, and I get a few kills in while doing som massive farming with post mortem and Ooze giving me Ashkandor besides the Mageslayer alrdy in my inv. I start pushing a wave of creeps towards their base doing some nice xp+gold farming along the way, while my last teammate defends our base with the 2 AIs. Some of the opponents tries to kill me off, but with the combo of ooze, 32% lifesteal, massive dmg+crit and hp-regen I have at this point I just eat them up for even more gold.
When I got enough for Bulwark of the ages; 25% less dmg + health/armor/regen, i pretty much became invincible even in 2vs1 matchups against queen shielder + oak. Hacking on oak with shield still "steals" life, so I just kept bashing on him through the shield till it wore of and ate him up
We pushed to their citadel and I even got to put on fathers ring, making it possible to stand at their crystal and kill them 1 after the other with 2-3 of them hitting me. The game ended shortly after that with me scoring around 1.1million dmg
That was the most fun and exciting match Ive played yet! Thanks to Morrog_le_furieux, my last teammate, for staying 
ps.: UB is insane with lategame items - compared to TB etc.:
