Peak of Winds

To execute this combo you must have Mirror Image in your void and all of Winds Heralds(East-Wind Herald/West-Wind Herald/North-Wind Herald/South-Wind Herald in play. So, basically (not in this order necessarily) use Howling Peak to Mirror Image any unit and try to spark your Skyward Seer with Kaleb's Favor to search more Heralds. Howling Peak will provide one turn with more life to your Heralds protecting them from some damage spells that can be lethal for them. Divining Rod should be necessary to find more Heralds.

TIP: Remember to get North-Wind Herald when you play 2 spell on same turn for 0 cost.
TIP: You can Spark Skyward Seer with Torch, Display of Instinct, Torrential Downpour or Iceberg Scattershot too.