20: When an effect you control would return one or more Clash cards to its owner's hand from play, put a Scarab Counter on target Clash card you don't control.
Opposing Clash cards with Scarab Counters get -1/-0 for each of those counters on them.
Action : Remove three Scarab Counters from among Clash cards you don't control. If you do, draw a card.
10: If the Portal is open, opposing Clash cards get, " Trigger - Defeat : Move all Scarab Counters on this card to another Clash card you control".