BOK: Goryo's Vengeance Arkham Horror Whenever a creature deals combat

Whenever a creature deals combat damage to one of your opponents

12 new tech cards

and (often) outright lies

Sacrifice a creature: Add one mana of any color

When you next cast a spell with {X} in its mana cost or activate an ability with {X} in its activation cost this turn

BOK: Goryo's Vengeance Arkham Horror Whenever a creature deals combatReturn target legendary creature card from your graveyard to the battlefield. That creature gains haste. Exile it at the beginning of the next end step. Splice onto Arcane {2}{B} (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)