Planechase Anthology Planes

Lethe Lake

At the beginning of your upkeep, put the top ten cards of your library into your graveyard.
Whenever you roll {Chaos}, target player puts the top ten cards of his or her library into his or her graveyard.

At the beginning of your upkeep, mill ten cards.
Whenever chaos ensues, target player mills ten cards.

Planechase Planes

At the beginning of your upkeep, put the top ten cards of your library into your graveyard.
Whenever you roll chaos, target player puts the top ten cards of his or her library into his or her graveyard.