Mulligans
General Mulligans
Turns 1-3: Play cheap cantrips to draw to Cataclysm, if you don't already have it. Play Lakkari Sacrifice either turn 1 or 3, depending on which is more convenient.
Turn 4: Play Cataclysm, clear board, discard 6 cards to instantly complete quest.
Turn 5: Play Nether Portal
Then Go nuts :)
Cataclysm = Instant Quest Completion!