Whenever a creature you control becomes blocked, you may return it to its owner's hand.

Create a token that's a copy of target creature you control. Flashback {5}{U}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Create a token that's a copy of target creature you control. If it's your turn, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Magecraft — Whenever you cast or copy an instant or sorcery spell, draw a card.

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

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

Reveal the top five cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other into your graveyard.

You gain 2 life, draw two cards, then discard two cards. Flashback {1}{W}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

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

Whenever a creature you control becomes blocked, you may return it to its owner's hand. Whenever one or more creatures you control deal combat damage to a player, draw a card.

Target creature gains flying until end of turn. Draw a card.

Flying Whenever a player casts their second spell each turn, Ledger Shredder connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on this creature.)

When Niko Aris enters the battlefield, create X Shard tokens. (They're enchantments with "{2}, Sacrifice this enchantment: Scry 1, then draw a card.") +1: Up to one target creature you control can't be blocked this turn. Whenever that creature deals damage this turn, return it to its owner's hand. −1: Niko Aris deals 2 damage to target tapped creature for each card you've drawn this turn. −1: Create a Shard token.

Scry 1. Draw a card.

Paradox — Draw a card for each spell you've cast this turn from anywhere other than your hand. Foretell {1}{U} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Target player mills two cards. Draw a card.

Target creature gets +1/+3 and gains flying until end of turn. Untap it.

Target creature can't be blocked this turn.

Negative — As long as K-9, Mark I is untapped, other legendary creatures you control have ward {1}. Affirmative — {1}{U}, {T}: Target legendary creature can't be blocked this turn. Doctor's companion (You can have two commanders if the other is the Doctor.)

Choose one — • Counter all other spells. • Switch each creature's power and toughness until end of turn. • Creatures can't be blocked this turn.

Target creature gains shadow until end of turn. (It can block or be blocked by only creatures with shadow.) Draw a card.

{T}: Add {C}. {T}: Add {W} or {U}. Adarkar Wastes deals 1 damage to you.

{T}: Add {C}. {T}, Sacrifice Command Beacon: Put your commander into your hand from the command zone.

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

Deserted Beach enters the battlefield tapped unless you control two or more other lands. {T}: Add {W} or {U}.

Glacial Fortress enters the battlefield tapped unless you control a Plains or an Island. {T}: Add {W} or {U}.

({T}: Add {U}.)

{T}: Untap target attacking creature. Prevent all combat damage that would be dealt to and dealt by that creature this turn.

{T}: Add {U}. {U}, {T}: Untap target legendary permanent.

({T}: Add {U}.) Mystic Sanctuary enters the battlefield tapped unless you control three or more other Islands. When Mystic Sanctuary enters the battlefield untapped, you may put target instant or sorcery card from your graveyard on top of your library.

{T}: Add {U}. Channel — {3}{U}, Discard Otawara, Soaring City: Return target artifact, creature, enchantment, or planeswalker to its owner's hand. This ability costs {1} less to activate for each legendary creature you control.

({T}: Add {W}.)

Put a shield counter on target creature. (If it would be dealt damage or destroyed, remove a shield counter from it instead.) Scry 1.

If you control a commander, you may cast this spell without paying its mana cost. Creatures you control gain indestructible until end of turn.

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

Target artifact or creature gains hexproof and indestructible until end of turn. Scry 1.

Target creature you control gains protection from the color of your choice until end of turn. Draw a card.

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.) Equip {1}

Put a +1/+1 counter on target creature. It gains lifelink and indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

Until your next turn, your life total can't change and you gain protection from everything. All permanents you control phase out. (While they're phased out, they're treated as though they don't exist. They phase in before you untap during your untap step.) Exile Teferi's Protection.

Magecraft — Whenever you cast or copy an instant or sorcery spell, creatures you control get +1/+1 until end of turn.

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

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

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

White spells you cast cost {1} less to cast. Blue spells you cast cost {1} less to cast. Spells your opponents cast cost {1} more to cast.

Until end of turn, whenever a player taps an Island for mana, that player adds an additional {U}.

Instant and sorcery spells you cast cost {1} less to cast. Whenever you cast an instant or sorcery spell, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Flying Spells you cast from anywhere other than your hand cost {2} less to cast. Foretell {4}{U} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

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

Destroy target permanent. Its controller creates a 3/3 green Elephant creature token.

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Whenever you cast an instant or sorcery spell, you may put a charge counter on Sphinx-Bone Wand. If you do, Sphinx-Bone Wand deals damage equal to the number of charge counters on it to any target.

Return target creature to its owner's hand. You create a token that's a copy of that creature.

This spell can't be countered. Destroy all creatures.

Exile target creature. Its controller gains life equal to its power.

Return a creature you control to its owner's hand, then destroy all creatures.

Magecraft — Whenever you cast or copy an instant or sorcery spell, create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it, where X is that spell's mana value. {3}{U}: Target creature token can't be blocked this turn.

Create two 1/1 blue Fish creature tokens with "This creature can't be blocked." Then for each kind of counter among creatures you control, put a counter of that kind on either of those tokens.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) Whenever you cast a noncreature spell, create a 1/1 white Monk creature token with prowess.

Whenever you cast an instant or sorcery spell, create a 1/1 blue Bird Illusion creature token with flying.

Whenever you cast a noncreature spell, create an X/X blue Shark creature token with flying, where X is that spell's mana value. Cycling {X}{1}{U} ({X}{1}{U}, Discard this card: Draw a card.) When you cycle Shark Typhoon, create an X/X blue Shark creature token with flying.