This land enters tapped. {T}: Add {G} or {W}.

{T}: Add {C}. {3}{G}, {T}, Sacrifice this land: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

This land enters tapped. {T}: Add {W} or {U}.

({T}: Add {R} or {G}.) This land enters tapped unless you control two or more basic lands.

{T}: Add one mana of any color in your commander's color identity.

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

{T}: Add one mana of any color that a land an opponent controls could produce.

{T}: Add {C}. {G/U}, {T}: Add {G}{G}, {G}{U}, or {U}{U}.

This land enters tapped. {T}: Add {U} or {B}.

This land enters tapped. {T}: Add {R} or {G}.

{T}: Add {C}. {4}, {T}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

This land enters tapped. {T}: Add {C}. {2}, {T}, Sacrifice this land: Search your library for a Forest card and a Plains card, put them onto the battlefield tapped, then shuffle.

{T}: Add {C}. {G}{U}, {T}: Put a +1/+1 counter on each creature that entered this turn.

({T}: Add {W} or {U}.) This land enters tapped unless you control two or more basic lands.

{T}: Add {C}. {1}{S}, {T}: Look at the top card of your library. If that card is snow, you may reveal it and put it into your hand. ({S} can be paid with one mana from a snow source.)

({T}: Add {G}.)

({T}: Add {U}.)

({T}: Add {R}.)

({T}: Add {W}.)

({T}: Add {B}.)

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

You may spend mana as though it were mana of any color. {T}: Add {C}{C}{C}{C}{C}. {5}, {T}: Draw a card for each color among permanents you control.

This artifact enters tapped. As this artifact enters, choose a color. {T}: Add one mana of the chosen color.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) As this artifact enters, choose a creature type. Creatures you control of the chosen type get +2/+2.

{4}, {T}, Discard your hand: Draw a card for each creature you control.

{T}: Add {C}{C}.

Whenever a creature you control leaves the battlefield, if it had counters on it, put those counters on The Ozolith. At the beginning of combat on your turn, if The Ozolith has counters on it, you may move all counters from The Ozolith onto target creature.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Create X X/X green Ooze creature tokens.

Each player chooses a creature type. Destroy all creatures that aren't of a type chosen this way. They can't be regenerated.

Hurricane deals X damage to each creature with flying and each player.

Search your library for a snow land card, put it onto the battlefield tapped, then shuffle.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.) When this creature enters, destroy target artifact, enchantment, or land.

Ancient Ooze's power and toughness are each equal to the total mana value of other creatures you control.

When this creature enters, create a 2/2 green Ooze creature token. At the beginning of your end step, put a +1/+1 counter on each Ooze you control. {1}{G}{G}{G}: Create a 2/2 green Ooze creature token.

Oozes you control get +1/+1. At the beginning of your upkeep, if you control a commander, create a token that's a copy of this creature.

At the beginning of your upkeep, if you control a black permanent, you may put a +1/+1 counter on this creature. At the beginning of your upkeep, if you control a green permanent, you may put a +1/+1 counter on this creature.

{T}: Add {C}.

{3}, Sacrifice this creature: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

Flying {S}: This creature gets +1/+1 until end of turn. ({S} can be paid with one mana from a snow source.)

Vigilance Whenever you cast a creature spell, draw a card, then you may put a land card from your hand onto the battlefield. {3}, {T}: Return target creature you control to its owner's hand.

Trample {3}{G}: This creature gets +X/+X until end of turn, where X is the number of snow permanents you control.

Flying {1}{S}: Snow creatures you control get +1/+1 until end of turn. ({S} can be paid with one mana from a snow source.)

Experiment Kraj has all activated abilities of each other creature with a +1/+1 counter on it. {T}: Put a +1/+1 counter on target creature.

When Golos enters, you may search your library for a land card, put that card onto the battlefield tapped, then shuffle. {2}{W}{U}{B}{R}{G}: Exile the top three cards of your library. You may play them this turn without paying their mana costs.

{2}, {T}: Return target permanent to its owner's hand. Activate only if you control four or more snow permanents.

Flash Flying When this creature enters, draw a card. This creature has deathtouch as long as you control at least three other snow permanents.

Whenever you cast a spell, this creature gets +X/+X until end of turn, where X is that spell's mana value.

As this creature enters, choose a creature type. This creature is the chosen type in addition to its other types. Each other creature you control of the chosen type enters with an additional +1/+1 counter on it.

When this creature dies, create two 2/2 green Ooze creature tokens. They have "When this token dies, create two 1/1 green Ooze creature tokens."

Indestructible (Damage and effects that say "destroy" don't destroy this creature.) Whenever this creature attacks, put a +1/+1 counter on it. Whenever a creature dealt damage by this creature this turn dies, put a +1/+1 counter on this creature.

{T}, Sacrifice another creature: Search your library for a creature card with mana value equal to 1 plus the sacrificed creature's mana value, put that card onto the battlefield, then shuffle. Activate only as a sorcery.

Flying Rimefeather Owl's power and toughness are each equal to the number of snow permanents on the battlefield. {1}{S}: Put an ice counter on target permanent. Permanents with ice counters on them are snow.

Flying {2}{S}: Tap target creature and put an ice counter on it. ({S} can be paid with one mana from a snow source.) Creatures with ice counters on them don't untap during their controllers' untap steps.

{G}: Exile target card from a graveyard. If it was a creature card, put a +1/+1 counter on this creature and you gain 1 life.

Sisay gets +1/+1 for each color among other legendary permanents you control. {W}{U}{B}{R}{G}: Search your library for a legendary permanent card with mana value less than Sisay's power, put that card onto the battlefield, then shuffle.

Slurrk enters with five +1/+1 counters on it. Whenever Slurrk or another creature you control dies, if it had a +1/+1 counter on it, put a +1/+1 counter on each creature you control that has a +1/+1 counter on it. Partner (You can have two commanders if both have partner.)

Landfall — Whenever a land you control enters, you gain 1 life and draw a card.

This creature enters with three ice counters on it. As long as this creature has an ice counter on it, prevent all combat damage it would deal and it has defender. Whenever this creature blocks, remove an ice counter from it.

At the beginning of your upkeep, destroy another nonland permanent chosen at random, then put a number of +1/+1 counters on Yule Ooze equal to that permanent's converted mana cost. {R}{G}, Eat some food: Regenerate Yule Ooze.

Enchant creature Enchanted creature has flying. Sacrifice this Aura: Enchanted creature and other creatures that share a creature type with it gain flying until end of turn.

As this enchantment enters, choose a creature type. Creatures you control of the chosen type get +1/+1. {1}, Sacrifice a creature of the chosen type: Target creature you control gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

Enchant creature Enchanted creature can't block, and its activated abilities can't be activated. {S}: Enchanted creature gains defender until end of turn. ({S} can be paid with one mana from a snow source.)

Enchant creature Cumulative upkeep {S} (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. {S} can be paid with one mana from a snow source.) Enchanted creature gets +3/+3 for each age counter on this Aura.

Whenever a player casts a spell, any other player may pay that spell's mana cost. If a player does, counter the spell. (Mana cost includes color.)

This enchantment enters with X ice counters on it. {3}: Put an ice counter on this enchantment. Remove an ice counter from this enchantment: Add {C}.

Whenever Marit Lage's Slumber or another snow permanent you control enters, scry 1. At the beginning of your upkeep, if you control ten or more snow permanents, sacrifice Marit Lage's Slumber. If you do, create Marit Lage, a legendary 20/20 black Avatar creature token with flying and indestructible.

Enchant snow land you control When this Aura enters, exile target creature an opponent controls until this Aura leaves the battlefield.

{1}{G}, Remove one or more +1/+1 counters from among creatures you control: Create an X/X green Ooze creature token, where X is the number of +1/+1 counters removed this way.

{1}{G}, Sacrifice a non-Ooze creature: Create an X/X green Ooze creature token, where X is the sacrificed creature's power. Activate only as a sorcery.

Creature spells you control can't be countered. Nontoken creatures you control have riot. (They enter with your choice of a +1/+1 counter or haste.)

Enchant creature Enchanted creature has flying. Enchanted creature has first strike as long as it's blocking and you control a snow land.

Counter target spell. Create an X/X green Ooze creature token, where X is that spell's mana value.