[1] Blom parted ways with PokerStars in August 2012 and was quickly signed-up by Full Tilt Poker on 15 October 2012, along with rival high-stakes player Tom Dwan.

Isildur1 first appeared at Full Tilt Poker on 16 September 2009, and remained largely unnoticed until November, when he began playing well-known professionals such as Tom Dwan, Phil Ivey, Brian Townsend, Cole South, and Patrik Antonius at stakes as high as $500/$1000.

[8] According to Full Tilt Poker's insider interview with Patrik Antonius, Isildur1 had a bankroll of approximately $2000 in autumn of 2008.

He then resurfaced a month later and played Brian Townsend, Patrik Antonius, and Cole South at the $200/$400 to $500/$1000 tables and suffered a million dollar loss.

A columnist on HighStakesDB, a website that monitors and tracks high-stakes activity online, suggested that Isildur1 was overly aggressive, which could cost him against elite competition.

With a profit of $1 million on Full Tilt Poker, Isildur1 waited at six heads-up $500/$1000 No Limit Hold'em tables for any challenger willing to play for such stakes.

By the end of the week, Isildur1 had gone on the largest run in the history of online poker, winning approximately $4 million from Dwan, prompting Dwan to issue a live challenge to play Isildur1 at the Full Tilt Poker Durrrr Million Dollar Challenge.

Isildur1 challenged Phil Ivey, widely regarded as one of the best all-round players in the world, to play three tables of heads-up no-limit hold’em at $500/$1000 stakes.

Isildur1 lost $3 million to Antonius after playing for only one day, which at the time, was the largest single-day gain and loss in the history of online poker.

Hastings won $4.2 million from Isildur1, making it the largest gain and loss in a single day in the history of online poker to date.

[12][13] As a result, Townsend lost some of his privileges as a sponsored Full Tilt Poker player (his "red pro status") for 30 days.

Blom's play on Full Tilt Poker between September 2009 and October 2010 at stakes of 50/100 and above resulted in a loss of $2,630,230.

[14] In December 2010, he partnered with online poker site PokerStars and launched a four-table of heads-up cash game no-limit hold'em and pot limit omaha "Superstar Showdown" challenge to anyone who is willing to play at stakes no lower than $50/$100 for 2,500 hands, similar to Dwan's Durrrr Million Dollar Challenge.

In January 2012, at the PokerStars Caribbean Adventure, he won the first live tournament of his career, the $100,000 Super High Roller event for $1,254,400.

On 11 December 2009, Ilari Sahamies appeared on the Finnish radio show Radio Rock Korporaatio, saying: “He’s been playing 9 tables at once against Patrik Antonius, Phil Ivey, and Tom Dwan durrrr – the guy must be missing a chromosome.”[25] Also that day, the Full Tilt Academy released a video in which Patrik Antonius discussed Isildur1 with Phil Gordon.

[25] Antonius, who won the largest online pot ever ($1.4 million) against Isildur1,[26] called him “extremely dangerous” because he constantly puts his opponents to difficult decisions.