Feln Mid v1.56 (added deck info)

This deck is a technical deck that emphasizes counters for the opponent's unit.

in early game, Kelmak's Spear is better played on your own. If it breaks, no problem, you can play from void.

Murgo the Bone Guy and Lipa, Witch of the Woods's hunt is powerful. The legendary Lipa, Witch of the Woods is especially over powered.

Iadria, Twisted Brewer is key card; combined with Plunk Wumpkin's Valor, it can comfortably attack. When defending, use Obstructive Flicker to destroy all attacking units.

Incarnus, Makkar's Listener is a Hero and can play Kelmak's Spear in void. Then, the status is 5/3, and mastery can be achieved in two attacks.

Discover Talents is good to take Obstructive Flicker if Iadria, Twisted Brewer is already played. Otherwise, you should take the Hero of your choice.

D'Angolo Might in the market is powerful when combined with Champion of Cunning.

Finally, if you are playing Iadria, Twisted Brewer, then Kelmak's Spear's Spellcraft 3 effect, Plague, is that you can kill opponent's all units.

Have a fun!