Karn, the Great Creator [War of the Spark Prerelease Promos] Classic Sixth Edition {T}: You gain 1 life

{T}: You gain 1 life

Set: Mirage Type: Artifact Rare Cost: {0} Discard your hand

but soon formed again

you gain 2 life

indestructible Kefnet the Mindful can't attack or block unless you have seven or more cards in hand

Karn, the Great Creator [War of the Spark Prerelease Promos] Classic Sixth Edition {T}: You gain 1 lifeSet: 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 converted mana cost. 2: You may choose an artifact card you own from outside the game or in exile, reveal that card, and put it into your hand.