Cumulative upkeep (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.)At the beginning of each player's upkeep, Cold Snap deals damage to that player equal to the number of snow lands they control.
Counter target spell unless its controller pays . If that player doesn't, they tap all lands with mana abilities they control and lose all unspent mana.
Untap target attacking creature. Prevent all combat damage that would be dealt to and dealt by that creature this turn.Draw a card at the beginning of the next turn's upkeep.
Change the text of target spell or permanent by replacing all instances of one color word with another. (For example, you may change "target black spell" to "target blue spell." This effect lasts indefinitely.)
: Grizzled Wolverine gets +2/+0 until end of turn. Activate only during the declare blockers step, only if at least one creature is blocking Grizzled Wolverine, and only once each turn.
At the beginning of your upkeep, sacrifice Drought unless you pay .Spells cost an additional "Sacrifice a Swamp" to cast for each black mana symbol in their mana costs.Activated abilities cost an additional "Sacrifice a Swamp" to activate for each black mana symbol in their activation costs.
At the beginning of your upkeep, sacrifice Justice unless you pay .Whenever a red creature or spell deals damage, Justice deals that much damage to that creature's or spell's controller.