Kethis, the Hidden Hand (Promo Pack) [Core Set 2020 Promos] Merfolk Soldier Must these roles be mutually

Must these roles be mutually exclusive

Morph {W} (You may cast this card face down as a 2/2 creature for {3}

Set: Ixalan Prerelease Promos Type: Creature — Dinosaur Rarity: Rare Cost: {5}{W}{W} Double strike

Exile Angel of Grace from your graveyard: Your life total becomes 10

When On Thin Ice enters the battlefield

Kethis, the Hidden Hand (Promo Pack) [Core Set 2020 Promos] Merfolk Soldier Must these roles be mutuallySet: Core Set 2020 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."