My best life gain / biggest swing ever

[Jonymasacer]

My oponet was getting mana screw and i Managed to get all 3 of my  {Healer of the Pride} out so I could gain six life per creature
Played 3  {Lingering Souls}
Pass turn
Payed the flashback cost on all of them
Pass turn
Played 2  {Captain's Call}
Pass turn
Played 2  {Midnight Haunting}
Pass turn he finally swings for 4 life after getting out of nana screw
I play  {Crusader of Odric}
And a  {Oblivion Ring} on his only creature
Pass turn he play  {Searing Spear}
I swing all in with him at 17 life
Game over

[The1337Magician]

My largest was probably  {Consuming Aberration} with  {Way of the Thief} and a  {Dimir Guildgate}. The  {Consuming Aberration} was about 150/150 or so.
Edit: it was a 4 player game against 80+ decks.

[Bozo_Law]

I play a deck that plays {Kiki-Jiki, Mirror Breaker} and {Deceiver Exarch} making infinite Exarchs with an infinite life swing.