Eradicator Valkyrie [Kaldheim Prerelease Promos] Planechase Its controller creates a 2/2

Its controller creates a 2/2 blue Bird creature token with flying

Set: Collectors' Edition Type: Artifact Rarity: Rare Cost: {0} {T}: Add {B}

Set: Signature Spellbook: Jace Type: Instant Rarity: Rare Cost: {U} Search your library for an instant or sorcery card

and how to fit their own heroes into the unique elements of its setting

put a +1/+1 counter on Toothy

Eradicator Valkyrie [Kaldheim Prerelease Promos] Planechase Its controller creates a 2/2Set: Kaldheim Prerelease Promos Type: Creature Angel Berserker Rarity: Mythic Cost: {2}{B}{B} Flying, lifelink, hexproof from planeswalkers Boast {1}{B}, Sacrifice a creature: Each opponent sacrifices a creature or planeswalker. (Activate only if this creature attacked this turn and only once each turn.)