Wall Breaker (Yellow)

Red Yellow Blue

If you've banished a card with 6 or more

this turn, this gets overpower.

Blood Debt

Rulings

From the Dusk till Dawn release notes

If you attack with this, and then banish a card with 6 or more power, then it will still gain overpower.

Keyword notes

Overpower - The defending hero can’t defend this with more than one action card.

Overpower is a static ability that generates a continuous effect.
A player can not declare more than one defending action card against an attack with overpower.
Overpower does not prevent additional action cards being added as defending cards through effects (e.g. Amulet of Havencall).

All keywords

Blood Debt - Blood Debt is a new keyword existing on Shadow cards. Shadow cards can inflict a loss of life to access a greater power. At the end of your turn, you lose 1{h} for each blood debt card in your banished zone.

You only lose life at the end phase. Players do not have priority during the end phase.
If you have multiple cards with blood debt, you lose 1 for each instance of blood debt at the end of turn.
Only face-up cards banished with blood debt counts and will lose you . Face-down banished cards have no effects or stats.