Tomáš Šťastný is one of the veterans of esports, having entered the scene in 2006 with CS 1.6. In the summer of 2012, he transitioned to CS:GO, playing for teams such as Playing Ducks, myDGB.net, 3DMAX, nEophyte, and Fraternitas. However, he did not achieve notable success during this period.
His first major accomplishments came after joining HellRaisers at the end of 2015. With this team, Tomáš reached the finals of the CS:GO Champions League Season 2, secured victories at the Europe Minor Championship - Columbus 2016 and Copenhagen Games 2016, and claimed silver at the DreamHack European Minor at Tours 2016.
In 2017, Tomáš became a part of Mousesports, where he enjoyed the most successful phase of his career. While with Mousesports, he won titles at ESG Tour Mykonos 2017, StarLadder & i-League StarSeries Season 4, V4 Future Sports Festival - Budapest 2018, and ESL One: New York 2018.
Following his time with Mousesports, oskar made an attempt to return to HellRaisers, faced periods of inactivity, and also played for Sprout, though no further significant victories followed. He is now a player for SINNERS.