Each player loses a third of their life, then discards a third of the cards in their hand, then sacrifices a third of the creatures they control of their choice, then sacrifices a third of the lands they control of their choice. Round up each time.
You have no maximum hand size.If an effect causes you to discard a card, discard it, but you may put it on top of your library instead of into your graveyard.
Other Zombie creatures have swampwalk. (They can't be blocked as long as defending player controls a Swamp.)Other Zombies have ": Regenerate this permanent."
Change the text of target spell or permanent by replacing all instances of one basic land type with another. (For example, you may change "swampwalk" to "plainswalk." This effect lasts indefinitely.)
If you would draw a card during your draw step, instead you may skip that draw. If you do, until your next turn, you can't be attacked except by creatures with flying and/or islandwalk.
HasteAt the beginning of your upkeep, if Nether Shadow is in your graveyard with three or more creature cards above it, you may put Nether Shadow onto the battlefield.
Enchant creatureEnchanted creature can attack as though it had haste.: Untap enchanted creature. Activate only during your turn and only once each turn.
Flying (This creature can't be blocked except by creatures with flying or reach.)Nightmare's power and toughness are each equal to the number of Swamps you control.
Bottomless Vault enters tapped.You may choose not to untap Bottomless Vault during your untap step.At the beginning of your upkeep, if Bottomless Vault is tapped, put a storage counter on it., Remove any number of storage counters from Bottomless Vault: Add for each storage counter removed this way.
You and target opponent each flip a coin. Mana Clash deals 1 damage to each player whose coin comes up tails. Repeat this process until both players' coins come up heads on the same flip.
Hollow Trees enters tapped.You may choose not to untap Hollow Trees during your untap step.At the beginning of your upkeep, if Hollow Trees is tapped, put a storage counter on it., Remove any number of storage counters from Hollow Trees: Add for each storage counter removed this way.
Dwarven Hold enters tapped.You may choose not to untap Dwarven Hold during your untap step.At the beginning of your upkeep, if Dwarven Hold is tapped, put a storage counter on it., Remove any number of storage counters from Dwarven Hold: Add for each storage counter removed this way.
Look at the top three cards of target player's library, then put them back in any order. You may have that player shuffle.Draw a card at the beginning of the next turn's upkeep.