The "Put 10 damage counters instead of 1 on that Pokmon between turns." part is also prevented, so if your opponent's Active Pokmon is already Poisoned, the Poison does not get changed into 10-damage one
They can provide the kind of value midrange decks or control decks lean on instants and sorceries for, while getting into the red zone and pressuring your opponents, punishing them for using ramp and card draw that doesn't affect the board
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Abominable Treefolk Adarkar Valkyrie Adarkar Windform Alpine Guide Alpine Meadow Arctic Flats Arctic Treeline Arcum's Astrolabe Ascendant Spirit Avalanche Caller Berg Strider Blessing of Frost Blizzard Brawl Blizzard Specter Blizzard Strix Blood on the Snow Boreal Centaur Boreal Druid Boreal Griffin Boreal Outrider Boreal Shelf Centaur Omenreader Chillerpillar Chilling Shade Coldsteel Heart Conifer Wurm Cover of Winter Dark Depths Diamond Faerie Draugr Necromancer Faceless Haven Frost Augur Frost Bite Frost Marsh Frost Raptor Frostpeak Yeti Frostwalk Bastion Frostwalla Frostweb Spider Gelid Shackles Glacial Floodplain Glacial Plating Glittering Frost Goblin Rimerunner Graven Lore Grim Draugr Gutless Ghoul Hailstorm Valkyrie Highland Forest Highland Weald Ice Tunnel Ice-Fang Coatl Iceberg Cancrix Icebind Pillar Icebreaker Kraken Icehide Golem Icehide Troll Isu the Abominable Jorn, God of Winter Kaldring, the Rimestaff Karplusan Wolverine Marit Lage's Slumber Moritte of the Frost Mouth of Ronom Narfi, Betrayer King Ohran Frostfang Ohran Viper Ohran Yeti On Thin Ice Phyrexian Ironfoot Phyrexian Snowcrusher
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January 10, 2011 at 3:47 PM Unknown said
If they ever get rid of more than creatures, they always cost additional mana
You may want to use this on the lethal attack of a planeswalker you control or on a utility creature like Birds of Paradise that's no longer pertinent
