Take down The Lich King with this Easy Rogue deck in Kobolts and Catacombs.
The idea is to rush him down and kill him before he enters 2nd phase. To do that exploit the murloc synergy. In the starting hand you want Murloc Tidecaller and Rockpool Hunter. Defend those Murloc Tidecallers at all cost,
The spells are there to tin out your deck and make it mare consistent.
Here is how i won: https://hsreplay.net/replay/BefN6VxmhjH2XVuhV6zzBL
Check out the other guides to beating The Lich King: