Kethis, the Hidden Hand [Core Set 2020 Prerelease Promos] Collectors’ Edition whenever either of those creatures

whenever either of those creatures deals combat damage

be ready to fight them all

−12: Exile all cards from target player's library

Set: Arena League 2005 Type: Basic Land — Mountain Rare Cost: ({T}: Add {R}

Whenever Merchant Ship attacks and isn't blocked

Kethis, the Hidden Hand [Core Set 2020 Prerelease Promos] Collectors’ Edition whenever either of those creaturesSet: Core Set 2020 Prerelease Promos Type: Legendary Creature Elf Advisor Rarity: Mythic Cost: {W}{B}{G} Legendary spells you cast cost {1} less to cast. Exile two legendary cards from your graveyard: Until end of turn, each legendary card in your graveyard gains "You may play this card from your graveyard." "The pen is mightier than the crown."