To complete Call for Hunters, tap one of your untapped units in the Character arena. Search your deck. You may take up to 4 Bounty Hunter cards from your deck, show them to your opponent, and put them into your hand. Then shuffle your deck.
Keywords
Bounty
Bounty: [bonus]: A layered ability triggered during a unit discard that means, "When another unit is discarded by damage from this unit, you gain the following when your next build step starts." Bounty triggers even if the attacking unit leaves play. Bounty works in the build zone. You will gain the bounty even if the attacking unit is sent to the discard pile. The unit can't collect a bounty on itself.