{T}: Draw three cards. {2}{U}{U}: Return Arcanis to its owner's hand.

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.

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.

Whenever a creature you control deals combat damage to an opponent, you may draw a card.

Discard all the cards in your hand, then draw that many cards. Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)

Flash Whenever a creature you control deals combat damage to a player, draw a card. When Enduring Curiosity dies, if it was a creature, return it to the battlefield under its owner's control. It's an enchantment. (It's not a creature.)

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.)

Skulk (This creature can't be blocked by creatures with greater power.) At the beginning of your upkeep, you may discard all the cards in your hand. If you do, draw that many cards.

Draw two cards, then discard two cards. Untap up to three lands.

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

This spell can't be countered. Flying Whenever you draw a card, Niv-Mizzet deals 1 damage to any target. Whenever a player casts an instant or sorcery spell, you draw a card.

Draw X cards, then discard a card.

Whenever a creature you control deals combat damage to a player, you may draw a card. Cycling {2} ({2}, Discard this card: Draw a card.)

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

Target opponent may have Risk Factor deal 4 damage to them. If that player doesn't, you draw three cards. Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its other costs. Then exile this card.)

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.

Other blue creatures you control have "Whenever this creature becomes tapped, draw a card, then discard a card." Other artifact creatures you control get +1/+1. {U/P}: Until end of turn, target creature you control becomes a blue artifact in addition to its other colors and types. Activate only as a sorcery. ({U/P} can be paid with either {U} or 2 life.)

When this creature enters, shuffle the cards from your hand into your library, then draw that many cards.

When this creature enters, shuffle the cards from your hand into your library, then draw that many cards. {R}, Sacrifice this creature: Each player shuffles the cards from their hand into their library, then draws that many cards.

If you would draw a card while your library has no cards in it, you win the game instead. +1: Target player mills two cards. Draw a card. −8: Draw seven cards. Then if your library has no cards in it, you win the game.

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

Whenever another creature you control enters, this creature deals 1 damage to each opponent. Unearth {R} ({R}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

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.

Whenever a creature you control with power 2 or less attacks, this enchantment deals 1 damage to the player or planeswalker that creature is attacking.

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

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

Add {R} for each creature you control.

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

Instant and sorcery spells you cast cost {1} less to cast.

{T}: Add {C}{C}. {2}, {T}, Sacrifice this artifact: Draw two cards.

{T}: Add {U}. {2}{U}: Put an hour counter on this artifact. At the beginning of each upkeep, put an hour counter on this artifact. When the twelfth hour counter is put on this artifact, shuffle your hand and graveyard into your library, then draw seven cards. Exile this artifact.

{T}: Add {C}. {1}, {T}, Sacrifice this artifact: Draw a card.

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

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

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

When this creature enters, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. When this creature dies, you may draw a card.

Instant and sorcery spells you cast cost {1} less to cast. Whenever you cast an instant or sorcery spell, draw a card.

Whenever you draw your second card each turn, create a token that's a copy of this creature.

Flying You have no maximum hand size. Whenever a source you control deals noncombat damage to an opponent, you draw that many cards.

Chain Reaction deals X damage to each creature, where X is the number of creatures on the battlefield.

Counter target spell.

Counter target spell with mana value 4 or greater.

Return target creature to its owner's hand. If its mana value was 3 or less, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

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.

Counter target spell. Ionize deals 2 damage to that spell's controller.

Counter target noncreature spell.

Counter target spell. Draw a card, then discard a card.

Counter target spell. If that spell is countered this way, put it into its owner's hand instead of into that player's graveyard. Draw a card.