Add {R} for each creature you control.

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.) Search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle.

Multikicker {1} (You may pay an additional {1} any number of times as you cast this spell.) Choose any target, then choose another target for each time this spell was kicked. Comet Storm deals X damage to each of them.

Gift a card (You may promise an opponent a gift as you cast this spell. If you do, they draw a card before its other effects.) Return target permanent card from your graveyard to your hand. If the gift was promised, instead return two target permanent cards from your graveyard to your hand.

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

{T}: Add one mana of any color in your commander's color identity. Sacrifice this artifact: Draw a card.

Green spells you cast cost {1} less to cast.

When this artifact enters and when you sacrifice it, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle. {2}, {T}, Sacrifice this artifact: You gain 3 life.

Red spells you cast cost {1} less to cast.

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

When this artifact enters, you get {E}{E} (two energy counters). Whenever you cast a spell from anywhere other than your hand, this artifact deals 1 damage to each opponent. {T}, Pay {E}{E}: Exile the top card of your library. You may play it until you exile another card with this artifact.

This land enters tapped. When this land enters, it deals 1 damage to target opponent. {T}: Add {R} or {G}.

({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.

This land enters tapped unless you control two or fewer other lands. {T}: Add {R} or {G}.

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

({T}: Add {G}.)

As this land enters, you may reveal a Mountain or Forest card from your hand. If you don't, this land enters tapped. {T}: Add {R} or {G}.

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

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {R}{G}.

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

{T}: Add {C}. {T}: Add {R} or {G}. This land deals 1 damage to you.

This land enters tapped. When this land enters, you gain 1 life. {T}: Add {R} or {G}.

({T}: Add {R}.)

{T}: Add {C}. {T}: Add {G}. Spend this mana only to cast a creature spell. {G}, {T}: Put a +1/+1 counter on each Frog, Rabbit, Raccoon, or Squirrel you control that entered the battlefield this turn.

{T}: Add {C}. {T}: Add {R}. Spend this mana only to cast a creature spell. {R}, {T}: Target Lizard, Mouse, Otter, or Raccoon you control gets +1/+0 and gains haste until end of turn. Activate only as a sorcery.

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

This land enters tapped unless you control a Mountain or a Forest. {T}: Add {R} or {G}.

({T}: Add {R} or {G}.) This land enters tapped. Cycling {2} ({2}, Discard this card: Draw a card.)

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

This land enters tapped. When this land enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.) {T}: Add {R} or {G}.

This land enters tapped. As it enters, choose a color other than red. {T}: Add {R} or one mana of the chosen color.

This creature enters with X +1/+1 counters on it. If X is 5 or more, it enters with an additional X +1/+1 counters on it. {1}{R}, Remove a +1/+1 counter from this creature: It deals 1 damage to any target.

When this creature enters, create a Food token. Whenever you expend 4, this creature gets +1/+1 until end of turn. (You expend 4 as you spend your fourth total mana to cast spells during a turn.)

Whenever you expend 4, this creature gains indestructible until end of turn. (You expend 4 as you spend your fourth total mana to cast spells during a turn.)

During your turn, each non-Equipment artifact and non-Aura enchantment you control with mana value 4 or greater is a 4/4 Elemental creature in addition to its other types and has indestructible, haste, and "Whenever this creature deals combat damage to a player, draw a card."

Whenever you expend 4, Raccoons you control get +1/+1 and gain vigilance until end of turn. (You expend 4 as you spend your fourth total mana to cast spells during a turn.)

First strike Whenever this creature attacks, add {R}. Until end of turn, you don't lose this mana as steps and phases end.

Descend 4 — When this creature enters, if there are four or more permanent cards in your graveyard, return target permanent card from your graveyard to your hand.

Whenever you cast a spell from exile or a land you control enters from exile, create a 2/2 green Wolf creature token. {1}, {T}, Discard a card: Exile the top card of your library. You may play it this turn.

When you cast this spell, reveal the top X cards of your library. You may put a nonland permanent card with mana value X or less from among them onto the battlefield. Then shuffle the rest into your library. This creature enters with X +1/+1 counters on it.

Each spell you cast that's red or green costs {1} less to cast.

Vigilance, trample, haste This creature enters with X +1/+1 counters on it. When this creature dies, create a number of tapped Treasure tokens equal to its power.

Trample When Hugs enters, exile the top X cards of your library. Until the end of your next turn, you may play those cards. You may play an additional land on each of your turns.

Trample Whenever you expend 4, this creature gets +2/+1 until end of turn. (You expend 4 as you spend your fourth total mana to cast spells during a turn.)

As long as there are four or more card types among cards exiled with this creature, it gets +4/+4 and has trample. {1}: Exile target card from a graveyard.

Trample This creature enters with X +1/+1 counters on it. When this creature dies, you gain life and draw cards equal to its power.

Changeling (This card is every creature type.) When this creature enters, you may exile a creature card from your graveyard. If you do, exile target artifact or enchantment an opponent controls.

Offspring {1} (You may pay an additional {1} as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.) First strike Whenever this creature deals combat damage to a player, create that many tapped Treasure tokens.

Flying, haste Whenever this creature attacks, it gets +X/+0 until end of turn, where X is the greatest mana value among artifacts you control. Whenever you expend 6, gain control of up to one target artifact for as long as you control this creature. (You expend 6 as you spend your sixth total mana to cast spells during a turn.)

{T}: Target creature you control gains haste until end of turn. Activate only as a sorcery.

Changeling (This card is every creature type.) As this creature enters, choose a creature type. You may look at the top card of your library any time. You may cast creature spells of the chosen type from the top of your library.

Trample Whenever you expend 4, target creature you control gets +1/+1 and gains trample until end of turn. (You expend 4 as you spend your fourth total mana to cast spells during a turn.)

Double strike This creature enters with X +1/+1 counters on it. {1}{R/G}: Put a +1/+1 counter on this creature. Activate only as a sorcery.

Whenever this creature attacks, up to one target attacking creature gets +2/+0 and gains trample until end of turn. Return that creature to its owner's hand at end of combat. (Return it only if it's on the battlefield.)

Gift a card (You may promise an opponent a gift as you cast this spell. If you do, when it enters, they draw a card.) Reach When this creature enters, if the gift was promised, destroy target artifact or enchantment an opponent controls.

Ravenous (This creature enters with X +1/+1 counters on it. If X is 5 or more, draw a card when it enters.) Defender Spore Chimney — When this creature enters, search your library for up to X basic land cards, put them onto the battlefield tapped, then shuffle.

Reach, trample, protection from multicolored This creature enters with X +1/+1 counters on it.

Changeling (This card is every creature type.) Whenever an opponent casts a spell, you may put a +1/+1 counter on this creature.

Menace Whenever you expend 4, this creature deals 2 damage to each opponent. (You expend 4 as you spend your fourth total mana to cast spells during a turn.)

Ravenous (This creature enters with X +1/+1 counters on it. If X is 5 or more, draw a card when it enters.) Death Frenzy — When this creature dies, create a number of 1/1 green Tyranid creature tokens equal to this creature's power.

{T}: Add one mana of any color. Whenever you expend 8, return up to one target permanent card from your graveyard to your hand. (You expend 8 as you spend your eighth total mana to cast spells during a turn.)

Changeling (This card is every creature type.)

Creatures you control get +1/+0. +1: Add {R} or {G}. Creature spells you cast this turn can't be countered. −2: Target creature you control fights target creature you don't control.

Whenever a creature you control attacks, you may put a quest counter on this enchantment. As long as this enchantment has seven or more quest counters on it, creatures you control get +5/+5.

Attacking creatures you control have double strike.

Creatures you control have haste. Sacrifice this enchantment: Target creature gets +2/+2 until end of turn.

When this enchantment enters, if you control a creature with power 4 or greater, draw a card. Creatures you control have trample. (Each of those creatures can deal excess combat damage to the player or planeswalker it's attacking.) Whenever a creature you control with power 4 or greater enters, draw a card.

When this enchantment enters and whenever you expend 4, put a stash counter on it. (You expend 4 as you spend your fourth total mana to cast spells during a turn.) {1}{R}, Sacrifice this enchantment: Discard your hand, then draw cards equal to the number of stash counters on this enchantment.

Whenever a creature you control enters, this enchantment deals 1 damage to each opponent.

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.)

Whenever a creature you control enters, it deals damage equal to its power to any target.

This spell costs {1} less to cast for each creature on the battlefield. Blasphemous Act deals 13 damage to each creature.

Crackle with Power deals five times X damage to each of up to X targets.

Destroy target artifact, target creature, target enchantment, and target land. (You can't cast this spell unless you have legal choices for all its targets.)

Reveal the top X cards of your library. You may put any number of permanent cards with mana value X or less from among them onto the battlefield. Then put all cards revealed this way that weren't put onto the battlefield into your graveyard.