Stinfo, the picture you guys have Photoshopped is bullshit quality, please do not rely on that.
This is quite intriguing to me, so I have watched the video repeatedly. You guys clearly haven't watched the video enough, so I'll break it down for you more exactly. Follow along and pause and stop and restart as you need.

At 23:49, after Tristan's first turn land drop and Ponder, he has 7 cards in hand (from left to right):
Flooded Strand
Brainstorm
Chain of Vapor
Doomsday
Sensei's Divining Top
Doomsday
Tundra
On his next turn he draws Polluted Delta (8 cards in hand), plays Flooded Strand (7 cards in hand), passes the turn. On his draw for his turn 3 Tristan draws Brainstorm (8 cards in hand), and he plays Tundra (7 cards in hand), and at 25:31 he has the following in hand (from left to right):
Sensei's Divining Top
Doomsday
Brainstorm
Doomsday
Chain of Vapor
Polluted Delta
Brainstorm
Notice how he moves the cards into his hand, in three strokes, so the first card drawn should then be the third card in from the right. He has a new Flooded Strand, Karakas, and a Rain of Filth, with 9 cards clearly in hand at 25:42 (9 cards, that's it). Now watch from 25:43 to 25:49 very carefully, repeatedly. He grabs the second to far left card (Doomsday), then the card on far left (Sensei's Divining Top), and that's it. At 25:44 after he has grabbed the TWO FAR LEFT (ie. EXISTING) cards from his hand above there are two cards in his left hand (Doomsday #2 and Sensei's Divining Top, in the same order from hand above at 25:31), which he then puts back on top of library at 25:45. He does not rearrange the order of his hand and at 25:49 it is quite clear (from left to right):
Brainstorm
Doomsday
Chain of Vapor
Polluted Delta
Flooded Strand
Karakas
Rain of Filth
Again, I don't know Tristan, so it's not like I'm here to defend a friend, but it's pretty clear by examining all the evidence that you guys are pretty wrong. The still at 25:39 shows three right card edges, and what everyone was assuming was a fourth card edge is probably just the shitty quality video, and what appears to be cards 3 and 4 (all the way to the left, where it only shows one right card edge) is most likely just that, one card. Look at the full evidence and clips, and not just one or two stills.
more big italian judge see this..and now they called wizards..tristan is the new bertoncini..2 big cheater..but tristan is a really powerfull magician..bertoncini no..