Black Knight [Beta Edition] Modern Horizons 3 Prerelease Promos and Unicorns you control get

and Unicorns you control get +1/+1

Murderous Mimic has all activated abilities of creatures you control that don't have the same name as this creature

Cult of the Sacred Union

Set: Lorwyn Type: Tribal Enchantment — Merfolk Rarity: Uncommon Cost: {1}{U} At the beginning of your end step

Storm World deals X damage to that player

Black Knight [Beta Edition] Modern Horizons 3 Prerelease Promos and Unicorns you control getSet: Beta Edition Type: Creature Human Knight Rarity: Uncommon Cost: {B}{B} First strike (This creature deals combat damage before creatures without first strike.) Protection from white (This creature can't be blocked, targeted, dealt damage, or enchanted by anything white.) Battle doesn't need a purpose; the battle is its own purpose. You don't ask why a plague spreads or a field burns. Don't ask why I fight.