Mulligans
General Mulligans
According to myriades[1] we have a ~75% chance of having a play on turn 2 if we mulligan aggressively for it (including Fiery Bats). There's a ~48% chance to get a Fiery Bat on turn one. These odds are good enough that we should look aggressively for 2-drops. If you have a 2-drop that you like (King's Elekk is probably not enough versus Mage or Warlock as these can easily remove it and gain tempo as both the Tempo Mage and Zoolock archetypes), you can keep 3- and even 4-drops if they suit your curve. Especially consider Carrion Grub versus traditionally aggro classes and Infested Wolf versus traditionally control classes.
[1]: http://www.hearthpwn.com/forums/hearthstone-general/theorycrafting/1292-odds-of-getting-a-card-if-you-mulligan



















