Karn, the Great Creator: War of the Spark Premodern reveal the top card of

reveal the top card of your library and put that card into your hand

you may put a land card from your hand onto the battlefield tapped

you may have target opponent discard a card at random

except it enters with an additional +1/+1 counter on it if it's a creature

Karn, the Great Creator: War of the Spark Premodern reveal the top card ofActivated 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 into your hand.