Mulligans
General Mulligans
Get early game and board control. You want to get to a late turn to use Frog to pop off.
Aggro Mulligans
Kill enemy minions and power up on board. Buff with Zentimo.
Control Mulligans
Doesn't matter what you have, just save Zentimo-Hex for taunts and use Thrall AEAP on your board of 1/1s.
Spirit of the Frog allows you to super-chain your spells and swarm the board with Sparks from Thunderhead and Voltaic Burst, Overload to power up your Likkim. Use Zentimo in combination with Hex, Earthen Might, and Rockbiter Weapon to buff your board and turn stuff into frogs. Use Thrall, Deathseer in combination with Murmuring Elemental to get a board of 5 and 6 cost minions out of your sparks. Electra Stormsurge into Bloodlust to give your board +6 attack.