Glacial Chasm [Ice Age] Phyrexian Wurm After lightning struck the cliffs

After lightning struck the cliffs

Set: Amonkhet Invocations Type: Creature — Avatar Rarity: Mythic Cost: {6}{B}{B} If there are ten or more creature cards total in all graveyards

it deals 1 damage to each opponent and each creature and planeswalker they control

As long as the top card of your library is black

Glacial Chasm [Ice Age] Phyrexian Wurm After lightning struck the cliffsSet: Ice Age Type: Land Rarity: Uncommon Cumulative upkeepPay 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.) When Glacial Chasm enters the battlefield, sacrifice a land. Creatures you control can't attack. Prevent all damage that would be dealt to you.