FELN - Just Good Feln

Seek Power / Vara's Favor / Eilyn's Favor - ramp to play your high cost units, gift or just fix power for Champion of Cunning

Sabotage - good against any variations of new Set 2 decks

Lightning Storm / Lightning strike - good against Rakano, Skycragg, Praxis

Extract - good in early game to remove small units and later to prepare play tactics

Annihilate / Feeding Time - good against Rakano Plate, big units, Revange

Steward of the Past - good against Dawnwalker, Inquisitor Makto, Feln or just big ground units.

Wisdom of the Elders / Feln Bloodcaster - card draw and good early blocker

Vara, Fate-Touched - game changer

Withering Witch + Lightning Storm or Vara's Favor or Black-Sky Harbinger - Combo removal

Champion of Cunning - support for other units and game changer in many cases