Sanguine Brushstroke [Mystery Booster 2] Efreet Wizard Set: Mystery Booster Type: Legendary

Set: Mystery Booster Type: Legendary Creature — Human Warrior Rarity: Rare Cost: {R} When a player casts a spell or a creature attacks

They just know

Set: Commander Anthology Type: Enchantment Rarity: Uncommon Cost: {2}{R}{R} At the beginning of the end step

then repeats this process until a creature card or X cards have been put into their graveyard this way

Sanguine Brushstroke [Mystery Booster 2] Efreet Wizard Set: Mystery Booster Type: LegendarySet: Mystery Booster 2 Type: Enchantment Rarity: Uncommon Cost: {1}{B}{B} When Sanguine Brushstroke enters the battlefield, create a Blood token and conjure a card named Blood Artist onto the battlefield. Whenever you sacrifice a Blood token, each opponent loses 1 life and you gain 1 life.