Karlov's Crossbow - Unknown Event

Karlov's Crossbow

Artifact — Equipment

Whenever equipped creature attacks, sacrifice Karlov's Crossbow and destroy target creature an opponent controls.

Equip

Forecast — , Reveal Karlov's Crossbow from your hand: For the remainder of the game, spells you cast named Karlov's Crossbow cost less to cast. (Activate only during your upkeep and only once each turn.)

Legalities

NOT LEGAL Standard
NOT LEGAL Pioneer
NOT LEGAL Modern
NOT LEGAL Legacy
NOT LEGAL Vintage
NOT LEGAL Commander
NOT LEGAL Oathbreaker
NOT LEGAL Alchemy
NOT LEGAL Historic
NOT LEGAL Brawl
NOT LEGAL Timeless
NOT LEGAL Pauper
NOT LEGAL Penny