Whenever a player taps a snow land for mana, that player adds one mana of any type that land produced. That land doesn't untap during its controller's next untap step.

Cumulative upkeep—Pay 1 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.)
At the beginning of each player's upkeep, that player sacrifices a green or white permanent of their choice.

Attacking creatures get +1/+0 and gain trample until end of turn.

As long as this creature is untapped, green creatures you control get +1/+1.

Flying
When this creature enters, return two target lands you control to their owner's hand.

Creatures without flying don't untap during their controllers' untap steps.
At the beginning of each player's upkeep, that player may choose any number of tapped creatures without flying they control and pay for each creature chosen this way. If the player does, untap those creatures.

Enchant creature
, Pay 1 life: Enchanted creature gets +2/+2 until end of turn. Activate no more than three times each turn.

First strike
: Regenerate this creature.

At the beginning of your upkeep, put a spore counter on this creature.
Remove three spore counters from this creature: Create a 1/1 green Saproling creature token.
Sacrifice a Saproling: This creature gets +1/+2 until end of turn.

: Look at the top three cards of target player's library, then put them back in any order.

Reach (This creature can block creatures with flying.)
Whenever this creature blocks a creature with flying, this creature gets +0/+2 until end of turn.

: Target land becomes a Swamp until its controller's next untap step.

: This creature deals 1 damage to any target.

Whenever this creature attacks and isn't blocked, you may have it deal 3 damage to target creature. If you do, this creature assigns no combat damage this turn.

Destroy target land. If that land was a snow land, Icequake deals 1 damage to that land's controller.

This creature can't block white creatures with power 2 or greater.
: This creature gains first strike until end of turn.

At the beginning of the end step, if no creatures are on the battlefield, sacrifice this enchantment.
: This enchantment deals 1 damage to each creature and each player. Activate no more times each turn than the number of snow Swamps you control.

, Sacrifice this creature: This creature deals 1 damage to each creature and each player. If you control a snow Swamp, this creature deals 2 damage to each creature and each player instead.

Destroy target nonblack creature. It can't be regenerated.

This creature can't block.
, Pay 1 life: Return this creature to its owner's hand.

, , Sacrifice a creature: Forests you control become 2/3 creatures until end of turn. They're still lands.

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.)
: Put a music counter on target creature. If it doesn't have "At the beginning of your upkeep, destroy this creature unless you pay for each music counter on it," it gains that ability.

This creature has trample as long as you control a snow land.

Enchant creature
When this Aura enters, draw a card at the beginning of the next turn's upkeep.
Enchanted creature gets +1/+1.

Destroy target land. If that land was a snow land, you gain 1 life.

Tap all blocking creatures. Prevent all combat damage that would be dealt this turn. Each attacking creature and each blocking creature doesn't untap during its controller's next untap step.

Destroy target artifact or land. It can't be regenerated.

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.)
All creatures get -1/-0.
: All creatures get -1/-0 until end of turn.

Exile this creature from your hand: Add .

: This creature gets -0/-1 and gains flying until end of turn.

Whenever this creature attacks and isn't blocked, you may sacrifice it. If you do, destroy target creature defending player controls. It can't be regenerated.

Enchant creature
Enchanted creature gets +0/+2.
: Enchanted creature gets +1/+0 until end of turn.

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.)
, Discard a card: Draw a card.

: Prevent the next 1 damage that would be dealt to any target this turn.

Whenever this creature blocks, it gets +2/+2 until end of turn.