Cavalier of Night (Promo Pack) [Core Set 2020 Promos] U-CRU082-RF and that player can't activate

and that player can't activate abilities that aren't mana abilities

Set: European Land Program Type: Basic Land — Swamp Rarity: Common ({T}: Add {B}

Exile Arc Blade with three time counters on it

After 891 samurai died in a single battle on its grasses

if Carrion Husk is in your banished zone

Cavalier of Night (Promo Pack) [Core Set 2020 Promos] U-CRU082-RF and that player can't activateSet: Core Set 2020 Promos Type: Creature Elemental Knight Rarity: Mythic Cost: {2}{B}{B}{B} Lifelink When Cavalier of Night enters the battlefield, you may sacrifice another creature. When you do, destroy target creature an opponent controls. When Cavalier of Night dies, return target creature card with mana value 3 or less from your graveyard to the battlefield.