Creature tokens you control have haste. Whenever one or more creatures attack, you may pay {1}{R}. If you do, creatures attacking your opponents and/or planeswalkers they control get +2/+0 until end of turn.

Psychosis Crawler's power and toughness are each equal to the number of cards in your hand. Whenever you draw a card, each opponent loses 1 life.

Ward—Pay 2 life. (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays 2 life.) Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) This creature has first strike as long as it's attacking.

Strive — This spell costs {2}{U} more to cast for each target beyond the first. Any number of target creatures each get +1/+1 and gain flying until end of turn.

Target creature gets +1/+0 until end of turn and can't be blocked this turn. Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

Target creature gets +2/+0 until end of turn. Create a Monster Role token attached to it. (If you control another Role on it, put that one into the graveyard. Enchanted creature gets +1/+1 and has trample.)

({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 {G}.)

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

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 {U}.)

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

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

({T}: Add {R}.)

This land enters tapped. {T}: Add {U} or {R}. {4}, {T}: Scry 1.

This land enters tapped. {T}: Add {G} or {U}. {4}, {T}: Scry 1.

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

This land enters tapped. {T}: Add {R} or {G}. {2}{R}{G}: This land becomes a 3/4 red and green Dinosaur creature until end of turn. It's still a land. Whenever this land attacks, another target attacking creature gets +2/+0 until end of turn. Untap that creature.

Rivendell enters tapped unless you control a legendary creature. {T}: Add {U}. {1}{U}, {T}: Scry 2. Activate only if you control a legendary creature.

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

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. 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, scry 1. (Look at the top card of your library. You may put that card on the bottom.) {T}: Add {G} or {U}.

Put a +1/+1 counter on target creature you control. It gains reach, trample, hexproof, and indestructible until end of turn. (It can't be the target of spells or abilities your opponents control. Damage and effects that say "destroy" don't destroy it.)

Target creature you control gets +0/+1 and gains hexproof until end of turn. Overload {1}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Target permanent you control gains hexproof and indestructible until end of turn. You gain 2 life. (A permanent with hexproof and indestructible can't be the target of spells or abilities your opponents control. Damage and effects that say "destroy" don't destroy it.)

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) Target creature gets +6/+6 until end of turn.

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

Target creature gets +4/+2 and gains trample until end of turn.

Target creature gets +7/+7 and gains trample until end of turn. It must be blocked this turn if able. (A creature with trample can deal excess combat damage to the player or planeswalker it's attacking.)

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

If you control a Forest, rather than pay this spell's mana cost, you may have an opponent gain 3 life. Target creature gets +4/+4 until end of turn.

Choose one — • Target creature gets +4/+0 and gains trample until end of turn. • Two target creatures each get +2/+0 and gain trample until end of turn.

Target creature gets +4/+4 and gains trample until end of turn.

Whenever you cast a spell, equipped creature gets +2/+2 until end of turn. Equip {2}

Target creature you control gets +X/+0 and gains first strike and trample until end of turn.

Target creature gets +7/+7 until end of turn.

Target creature gets +1/+1 until end of turn for each Forest you control.

Until end of turn, target creature you control becomes a green Wurm with base power and toughness 6/4. Overload {4}{G}{G} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Target creature gains double strike until end of turn. Ferocious — That creature also gains trample until end of turn if you control a creature with power 4 or greater.

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

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 a Plains, Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle.

Draw a card. You may put a land card from your hand onto the battlefield.

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 a Forest card, put that card onto the battlefield, then shuffle.

{T}: Add one mana of any color. Spend this mana only to cast an instant or sorcery spell. {5}{U}, {T}: Target player mills three cards. (They put the top three cards of their library into their graveyard.)

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

Sacrifice this creature: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

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

Flying Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) When this creature enters, you may put target instant or sorcery card from your graveyard on top of your library.

Put a +1/+1 counter on target creature you control if it's legendary. Then it fights target creature an opponent controls. (Each deals damage equal to its power to the other.)

The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.

Counter target spell unless its controller pays {X}. Scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Counter target spell.

Counter target creature spell. Draw a card.

This spell costs {2} less to cast if you've cast another instant or sorcery spell this turn. Target creature you control gets +1/+2 until end of turn. Then it fights target creature you don't control. (Each deals damage equal to its power to the other.)

Counter target noncreature spell.

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.)

Exile target creature. Its controller manifests the top card of their library. (That player puts the top card of their library onto the battlefield face down as a 2/2 creature. If it's a creature card, it can be turned face up any time for its mana cost.)