Eliminate the Competition [Kaladesh Prerelease Promos]

Eliminate the Competition [Kaladesh Prerelease Promos]Set: Kaladesh Prerelease Promos Type: Sorcery Rarity: Rare Cost: {4}{B} As an additional cost to cast this spell, sacrifice X creatures. Destroy X target creatures. Open hostilities are strictly forbidden at the Inventors' Fair, but "accidents" still happen.

Set: War of the Spark Type: Legendary Creature — Human Assassin Rarity: Rare Cost: {3}{B}{B} Menace

Nonblack creatures get -1/-1

You may reveal a permanent card from among them and put it into your hand

it gets +1/+1 until end of turn for each opponent you attacked with a creature this combat

of the azure waves white with froth

Set: The List Type: Snow Creature — Angel Rarity: Rare Cost: {4}{W}{W} Flying

Set: Double Masters Type: Creature — Phyrexian Human Artificer Rarity: Rare Cost: {2}{W} When Blade Splicer enters the battlefield

Set: Ravnica Allegiance Tokens Type: Token Creature — Human Rarity: Common

sacrifice Spark Elemental

Set: Invasion Type: Basic Land — Plains Rarity: Common ({T}: Add {W}

Activated abilities of sources with the chosen name cost {2} more to activate unless they're mana abilities

those creatures get +2/+1 until end of turn instead