研磨石/Whetstone

Artifact -
{3}: Each player puts the top two cards of their library into their graveyard.

Artifact -
{3}: Each player mills two cards.

Artifact -
{3}: Each player puts the top two cards of his or her library into his or her graveyard.

Artifact -
{3}: Each player puts the top two cards of their library into their graveyard.

Artifact -
{3}: Each player puts the top two cards from his or her library into his or her graveyard.

Artifact -
{3}: Each player puts the top two cards of his or her library into his or her graveyard.