Karn, the Great Creator [War of the Spark Prerelease Promos] Iconic Masters Discard a card with mana

Discard a card with mana value X: Counter target spell with mana value X

Set: Unlimited Edition Type: Artifact Rarity: Uncommon Cost: {3} Basalt Monolith doesn't untap during your untap step

except it doesn't copy that creature's color and it has this ability

Set: Rivals of Ixalan Prerelease Promos Type: Creature — Dinosaur Rarity: Mythic Cost: {3}{W}{W} Enrage — Whenever Trapjaw Tyrant is dealt damage

Set: Mythic Edition Type: Legendary Planeswalker — Bolas Rarity: Mythic Cost: {4}{U}{B}{B}{R} +3: Destroy target noncreature permanent

Karn, the Great Creator [War of the Spark Prerelease Promos] Iconic Masters Discard a card with manaSet: War of the Spark Prerelease Promos Type: Legendary Planeswalker Karn Rarity: Rare Cost: {4} Activated abilities of artifacts your opponents control can't be activated. +1: Until your next turn, up to one target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value. 2: You may reveal an artifact card you own from outside the game or choose a face up artifact card you own in exile. Put that card