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

Sacrifice a creature: Add {C}{C}.

Lands you control have "{T}: Add one mana of any color." {T}: Add one mana of any color.

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.

{T}: Add {G}.

{T}: Add one mana of any color. If you control a creature with power 4 or greater, add two mana of any one color instead.

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.

Search your library for up to two basic Forest cards, reveal those cards, and put one onto the battlefield tapped and the rest into your hand. Then shuffle. Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, search your library for up to three basic Forest cards instead of two.

Untap all permanents you control during each other player's untap step.

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

(Gain the next level as a sorcery to add its ability.) When this Class enters, draw two cards, then discard two cards. {U}{R}: Level 2 Creatures you control have "{T}: Add {U} or {R}. Spend this mana only to cast an instant or sorcery spell or to gain a Class level." {3}{U}{R}: Level 3 Whenever you cast an instant or sorcery spell, that spell deals damage to each opponent equal to the number of instant and sorcery spells you've cast this turn.

This land enters tapped unless you control an Island. {T}: Add {U}. {U}, {T}: The next spell you cast this turn has improvise. (Your artifacts can help cast that spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)

{T}: Add {C}. {T}, Sacrifice this land: Search your library for a basic Forest, Island, or Mountain card, put it onto the battlefield tapped, then shuffle. Cycling {G}{U}{R} ({G}{U}{R}, Discard this card: Draw a card.)

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

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

({T}: Add {G}.)

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

({T}: Add {U}.)

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

({T}: Add {R}.)

This land enters tapped. {T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

You have no maximum hand size. {T}: Add {C}.

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

This land enters tapped. When this land enters, target creature an opponent controls doesn't untap during its controller's next untap step. {T}: Add {U}.

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

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 {U} or {R}.

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

This spell costs {U} less to cast for each instant and sorcery spell you've cast this turn. Whenever this creature attacks, exile up to one target instant or sorcery card from your graveyard. Copy it. You may cast the copy. You may cast this card from your graveyard by exiling four instant and/or sorcery cards from your graveyard in addition to paying its other costs.

You may sacrifice a nontoken red creature rather than pay this spell's mana cost. Copy target instant or sorcery spell. You may choose new targets for the copy.

When you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy. Flashback {1}{U}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

If this card is in your opening hand, you may begin the game with it on the battlefield. Whenever you cast an instant or sorcery spell that targets only a single creature you control, copy that spell. You may choose new targets for the copy.

({U/R} can be paid with either {U} or {R}.) When you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy.

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.)

Counter target spell. Its controller draws a card. Draw a card.

Counter target creature spell. Put a +1/+1 counter on up to one target creature you control.

This spell costs {1} more to cast for each target beyond the first. Fireball deals X damage divided evenly, rounded down, among any number of targets.

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.) Counter target spell.

Choose one — • Counter target creature or enchantment spell. • Return one or two target creatures and/or enchantments you own to your hand.

Lightning Bolt deals 3 damage to any target.

Target creature you control gets +X/+X until end of turn. Then it fights up to one target creature you don't control. (Each deals damage equal to its power to the other.)

Counter target spell. Untap up to four lands.

Other Snake creatures you control get +1/+0. Whenever a Warrior you control deals combat damage to a creature, destroy that creature at end of combat.

Spree (Choose one or more additional costs.) + {1}{U} — Counter target spell. + {3} — Create a token that's a copy of target artifact or creature you control. + {2} — Draw two cards, then discard a card.

Put a +1/+1 counter, a reach counter, and a deathtouch counter on target creature. Untap it.

Prevent all combat damage that would be dealt to you this turn. Populate. (Create a token that's a copy of a creature token you control.)

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control. It can attack and {T} no matter when it came under your control.) Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Exile the top X cards of your library. You may cast instant and sorcery spells with mana value X or less from among them without paying their mana costs. Then put all cards exiled this way that weren't cast into your graveyard.

Whenever a player casts a spell, if it's not their turn, that player draws a card.

Reveal the cards in your library. An opponent chooses from among them a creature card, a land card, and a noncreature, nonland card. You put the chosen cards into your hand. Then shuffle.

At the beginning of each player's draw step, if this artifact is untapped, that player draws an additional card.

{U}, {T}: Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.

Join forces — Starting with you, each player may pay any amount of mana. Each player draws X cards, where X is the total amount of mana paid this way.

Cumulative upkeep {1} (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.) Whenever an opponent casts a noncreature spell, you may draw a card unless that player pays {4}.

Attacking creatures you control have deathtouch. Whenever a creature you control deals combat damage to a player, draw a card.

Each player discards their hand, then draws seven cards. Miracle {1}{R} (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)

Creatures you control get +2/+0 until end of turn.

Target creature gets +3/+3 until end of turn.

Target creature gets +3/+2 until end of turn.

({G/P} can be paid with either {G} or 2 life.) Target creature gets +2/+2 until end of turn.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Choose one — • Destroy target artifact. • Target creature gets +3/+2 and gains trample until end of turn.

Whenever you cast a noncreature spell, put a +1/+1 counter on this creature.

Flying, haste Whenever you cast a noncreature spell, put a +1/+1 counter on this creature.

Target creature gets +4/+4 until end of turn.

Creatures you control get +0/+5 and gain reach until end of turn.