Choose one --

• Abrade deals 3 damage to target creature.

• Destroy target artifact.

Counter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")

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

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

Whenever you cast a spell, add {R}. Until end of turn, you don't lose this mana as steps and phases end.

Creatures you control can boast twice during each of your turns rather than once.

Discard a card: Exile the top two cards of your library. You may play those cards this turn.

Target creature becomes blue until end of turn. Untap that creature.

Draw a card.

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.

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

Draw a card.

Counter target spell.

Target creature becomes red and gains haste until end of turn.

Draw a card.

Return target nonland permanent you don't control to its owner's hand.

Overload {6}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Whenever you cast a noncreature spell, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)

Delirium -- As long as there are four or more card types among cards in your graveyard, Dragon's Rage Channeler gets +2/+2, has flying, and attacks each combat if able.

Look at the top three cards of your library. Put one of them into your hand, put one of them on the bottom of your library, and exile one of them. You may play the exiled card this 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 two cards, then discard two cards. Untap up to three lands.

Search your library for a card, put that card into your hand, discard a card at random, then shuffle.

({U/P} can be paid with either {U} or 2 life.)

Look at target player's hand.

Draw a card.

({R/P} can be paid with either {R} or 2 life.)

Gut Shot deals 1 damage to any target.

Look at the top four cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

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

Choose one. If you control a commander as you cast this spell, you may choose both instead.

• Add {R} for each card in target opponent's hand.

• Exile the top three cards of your library. You may play them this turn.

Whenever you cast an instant or sorcery spell, flip a coin. If you lose the flip, return that spell to its owner's hand. If you win the flip, copy that spell, and you may choose new targets for the copy.

Partner (You can have two commanders if both have partner.)

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.)

Lightning Bolt deals 3 damage to any target.

{T}: Add {U}.

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

If an opponent controls an Island and you control a Mountain, you may cast this spell without paying its mana cost.

Destroy target artifact.

Look at the top three cards of your library, then put them back in any order. You may shuffle.

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.)

Untap target creature.

Draw a card.

Add {R}{R}, then add {R} for each card named Rite of Flame in each graveyard.

Draw a card. Scry 2.

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

When Spellseeker enters the battlefield, you may search your library for an instant or sorcery card with mana value 2 or less, reveal it, put it into your hand, then shuffle.

Whenever you cast your second spell each turn, exile the top card of your library. Until the end of your next turn, you may play that card.

{T}: Copy target instant or sorcery spell you control. You may choose new targets for the copy. Activate only if you've cast three or more spells this turn.

Flip a coin. If you win the flip, take an extra turn after this one.

Storm-Kiln Artist gets +1/+0 for each artifact you control.

Magecraft -- Whenever you cast or copy an instant or sorcery spell, create a Treasure token.

Create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

{T}: Add {C}.

{T}: Add {U} or {R}. Talisman of Creativity deals 1 damage to you.

When Thassa's Oracle enters the battlefield, look at the top X cards of your library, where X is your devotion to blue. Put up to one of them on top of your library and the rest on the bottom of your library in a random order. If X is greater than or equal to the number of cards in your library, you win the game. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.)

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn.

Create a Wicked Role token attached to up to one target creature. (If you control another Role on it, put that one into the graveyard. Enchanted creature gets +1/+1. When this Aura is put into a graveyard, each opponent loses 1 life.)

Each nonland card in your graveyard has escape. The escape cost is equal to the card's mana cost plus exile three other cards from your graveyard. (You may cast cards from your graveyard for their escape cost.)

At the beginning of the end step, sacrifice Underworld Breach.

Destroy target artifact you don't control.

Overload {4}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")