Viktor Blom (born 26 September 1990) is a Swedish high-stakes online poker player, best known by the online poker name Isildur1.
His rise to fame drew considerable attention around the poker world in late 2009, when he took part in all ten of the largest pots in online poker history.
In December 2010, it was announced that then-anonymous Isildur1 had joined Team PokerStars Pro.
Blom's identity was revealed by PokerStars on 8 January 2011, at the PokerStars Caribbean Adventure.
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.