Stampy, Developers' Bane

When Stampy, Developers' Bane enters the battlefield, each player sacrifices all lands they control, then reveals cards from the top of their library until they reveal that many land cards. Put those cards onto the battlefield, and all other revealed cards on the bottom of their owners' libraries in a random order.
Whenever a nonbasic land goes to the graveyard from anywhere, you may deal 1 damage to target player.