Unfortunately I took the screenshot at an awkward moment, there wasn't a great chance to pause the screen after your opponent was at negatives. This is the unlocked DotP14 Oracle of Mul-Daya big mana deck, so it was (possibly multiple) Avenger of Zendikar ETBs for loads of plant tokens + a bunch of land ETBs accelerated by multiple Primeval Titans. To the left of the red mark on the side of the Primeval in the screenshot you can see the beginning of a stack of look-like-over-10/10 Plant tokens, so a bunch of those and a bunch of Eldrazi. I might still have the decklist even, it's pretty bad in any real format.

How did you get the damage up that high?