Karn, the Great Creator - [Borderless] Bloomburrow Commander (BLC) BLC You may reveal a land

You may reveal a land card from among them and put that card into your hand

Whenever you attack with a creature an opponent owns

"The City in the Sea"

"I want to help Zendikar

Karn, the Great Creator - [Borderless] Bloomburrow Commander (BLC) BLC You may reveal a landActivated 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.