Katsu, the Wanderer // Ponder (OUT045 // OUT237) [Outsiders]

The first time an attack action card you control hits each turn, you may discard a card with cost 0. If you do, search your deck for a card with <strong>combo</strong>, banish it, then shuffle. You may play it this turn.
<br><strong>Ponder</strong>
<br>At the beginning of your end phase, destroy Ponder and draw a card.