Shared Trauma

Join forces — Starting with you, each player may pay any amount of mana. Each player puts the top X cards of his or her library into his or her graveyard, where X is the total amount of mana paid this way.

Join forces — Starting with you, each player may pay any amount of mana. Each player mills X cards, where X is the total amount of mana paid this way.

Commander Anthology Volume II

Join forces — Starting with you, each player may pay any amount of mana. Each player puts the top X cards of their library into their graveyard, where X is the total amount of mana paid this way.