Formidable — {3}{R}{R}: Creatures you control gain menace until end of turn. Activate only if creatures you control have total power 8 or greater. (They can't be blocked except by two or more creatures.)

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

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

You have no maximum hand size. {T}: Add one mana of any color.

{1}, {T}: Add {U}{R}.

You may cast spells from your hand without paying their mana costs.

Sacrifice a creature: Add one mana of any color.

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

As this creature enters, choose a creature type. This creature is the chosen type in addition to its other types. Other creatures you control of the chosen type get +1/+1.

Creatures you control with flying get +1/+1.

Attacking non-Human creatures you control get +1/+0 and have trample.

Other red creatures you control get +1/+1. {R}, {T}: Another target red creature you control gains haste until end of turn. (It can attack and {T} this turn.)

Other blue creatures you control get +1/+1. {U}, {T}: Another target blue creature you control gains flying until end of turn.

Whenever a creature you control deals combat damage to a player, you may draw a card. {1}{U}, {T}: Creatures your opponents control attack this turn if able.

As an additional cost to cast this spell, discard a card. Draw two cards and create two Treasure tokens. (They're artifacts with "{T}, Sacrifice this token: Add one mana of any color.")

Body of Knowledge's power and toughness are each equal to the number of cards in your hand. You have no maximum hand size. Whenever this creature is dealt damage, draw that many cards.

Draw three cards, then put two cards from your hand on top of your library in any order.

Flying Whenever an opponent draws a card, you may draw two cards.

Surveil 1. (Look at the top card of your library. You may put it into your graveyard.) Draw a card.

Enchant creature Whenever enchanted creature deals damage to an opponent, you may draw a card.

Flying You have no maximum hand size. Whenever a creature token you control deals combat damage to a player, draw a card.

Choose a creature type. Draw a card for each permanent you control of that type.

Draw cards equal to the number of cards in your library, then put a card from your hand on top of your library. You have no maximum hand size until your next turn.

Draw two cards, then discard two cards. Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Draw a card for each attacking creature.

As this enchantment enters, choose a creature type. Whenever a creature you control of the chosen type enters or attacks, draw a card.

Flying, haste Whenever an opponent casts their second spell each turn, draw a card. Partner (You can have two commanders if both have partner.)

{1}{R}, {T}, Sacrifice this creature: Each player discards their hand, then draws seven cards.

Each player shuffles the cards from their hand into their library, then draws that many cards. Metalcraft — If you control three or more artifacts, Molten Psyche deals damage to each opponent equal to the number of cards that player has drawn this turn.

+2: Draw two cards, then put a card from your hand on the bottom of your library. −2: Create a blue Dog Illusion creature token with "This token's power and toughness are each equal to twice the number of cards in your hand." −10: Exchange your hand and library, then shuffle. You get an emblem with "You have no maximum hand size."

Scry 1. (Look at the top card of your library. You may put that card on the bottom.) Draw a card.

Scry 2, then draw a card. (To 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.)

Each player draws X cards.

Draw X cards, then discard a card.

Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.

Whenever this creature or another non-Human creature you control enters, you may draw a card. If you do, discard a card.

Equipped creature gets +1/-1. Whenever equipped creature dies, draw two cards. Equip {1}

Each player shuffles their hand and graveyard into their library, then draws seven cards. Exile Time Reversal.

Discard all the cards in your hand, then draw that many cards.

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.) Draw X cards.

You have no maximum hand size. At the beginning of your upkeep, if you have exactly thirteen cards in your hand, you win the game. {3}{U}: Draw a card.

Flying Whenever a creature with flying attacks, you may draw a card.

For each attacking creature, its owner puts it on their choice of the top or bottom of their library.

When this creature enters, it deals X damage to any target, where X is the greatest number of creatures you control that have a creature type in common.

Counter target spell.

Fateful Showdown deals damage to any target equal to the number of cards in your hand. Discard all the cards in your hand, then draw that many cards.

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

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.

Indestructible As long as your devotion to red is less than five, Purphoros isn't a creature. Whenever another creature you control enters, Purphoros deals 2 damage to each opponent. {2}{R}: Creatures you control get +1/+0 until end of turn.

Trample, haste Alliance — Whenever another creature you control enters, double this creature's power until end of turn.

Choose one — • Create three 1/1 red Goblin creature tokens. • Creatures you control get +1/+1 and gain haste until end of turn. Entwine {2}{R} (Choose both if you pay the entwine cost.)

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

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

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

{T}: Add {C}. {1}{U}{R}, {T}: Draw a card, then discard a card.

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

{T}, Pay 1 life: Add {U} or {R}. {1}, {T}, Sacrifice this land: Draw a card.

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

({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 {R}.)

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

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

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

({T}: Add {U} or {R}.) As this land enters, you may pay 2 life. If you don't, it enters tapped.

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

This land enters tapped unless you control an Island or a Mountain. {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}.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.) Equip {0}