Glacial Chasm

Land

Cumulative upkeep—Pay 2 life. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

If Glacial Chasm would come into play, sacrifice a land instead. If you do, put Glacial Chasm into play. If you don't, put it into its owner's graveyard.

Skip your combat phase.

Prevent all damage that would be dealt to you.