Harvesting the Crimson Essence (ESD1-010 R) [Descent into the Raven's Catacombs]

[Quickcast] (You may play this card anytime you have priority.)You pay B less to play this card from a rune area.As an additional cost to play this card, banish a resonator.Target player banishes a non-Demon resonator that has or shares the highest total cost from among resonators they control. If they do, you gain X life, where X is the DEF of the resonator banished this way.