Galvanizer Piloted Paladin

Use Galvanizer to reduce the mechs in your hand, then summon Piloted Reaper to summon another minions that cost 2-mana or less, like a reduce Annoy-o-Module or Weaponized Pinata; if you have Spiritsinger Umbra, you can chain the deathrattle of Piloted Reaper with the summoned minion (Weaponized Pinata, Harvest Golem or another Piloted Reaper), that for gain value in field.

All your minions, except The Lich King are <6 cost mana, so Val'anyr is so good because always (you only need play  The Lich King before) can be summon the buffed minion with Spiritsinger Umbra.

Witchwood Piper is for draw Galvanizer (A deck core). Desperate Stand is for gain more value or cast it in Spiritsinger Umbra to make more difficulty to your opponent she removal.

Kangor's Endless Army can resurrect Galvanizer, but all the another mech you have are a good target to revive, so isn’t important.

GL