Psionic Spells -- When Aberrant Mind Sorcerer enters the battlefield, choose target instant or sorcery card in your graveyard, then roll a d20.

1--9 | You may put that card on top of your library.

10--20 | Return that card to your hand.

Roll two d8 and choose one result. Draw cards equal to that result. Then you may cast an instant or sorcery spell with mana value less than or equal to the other result from your hand without paying its mana cost.

Search the Room -- {5}{U}: Roll a d20.

1--9 | Draw a card.

10--20 | Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)

{T}: Add {C}.

{5}, {T}: Draw a card. Activate only if you have the city's blessing.

Azorius Guildgate enters the battlefield tapped.

{T}: Add {W} or {U}.

Whenever you sacrifice another nontoken artifact or creature, exile it.

{2}, {T}, Sacrifice another artifact or creature: Draw a card.

{3}, {T}, Sacrifice Bag of Devouring: Roll a d10. Return up to X cards from among cards exiled with Bag of Devouring to their owners' hands, where X is the result.

{4}{G}, {T}: Roll a d8. Reveal cards from the top of your library until you reveal a creature card with mana value equal to the result. Put that card onto the battlefield and the rest on the bottom of your library in a random order.

(Gain the next level as a sorcery to add its ability.)

If you would roll one or more dice, instead roll that many dice plus one and ignore the lowest roll.

{1}{R}: Level 2

Whenever you roll one or more dice, target creature you control gets +2/+0 and gains menace until end of turn.

{2}{R}: Level 3

Creatures you control have haste.

Cast this spell only before combat or during combat before blockers are declared.

Roll two d20 and ignore the lower roll.

1--14 | Choose any number of creatures. They block this turn if able.

15--20 | You choose which creatures block this turn and how those creatures block.

Bojuka Bog enters the battlefield tapped.

When Bojuka Bog enters the battlefield, exile target player's graveyard.

{T}: Add {B}.

Boros Guildgate enters the battlefield tapped.

{T}: Add {R} or {W}.

Whenever you roll one or more dice, Brazen Dwarf deals 1 damage to each opponent.

{1}, {T}: Roll a d4 and create a number of Treasure tokens equal to the result. The player to your right gains control of Bucknard's Everfull Purse.

Wild Magic Surge -- Whenever Chaos Channeler attacks, roll a d20.

1--9 | Exile the top card of your library. You may play it this turn.

10--19 | Exile the top two cards of your library. You may play them this turn.

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

Whenever a 6 is rolled on a six-sided die, put a +1/+1 counter on each Bird. (You may roll dice only when instructed to.)

Tap an untapped Bird you control: Roll a six-sided die. (Like now.)

Whenever you roll a 4 or higher on a die, create a 1/1 green Squirrel creature token.

If you roll a 3 on a six-sided die, you may reroll that die.

{6}, Roll a d8: Monstrosity X, where X is the result. (If this creature isn't monstrous, put X +1/+1 counters on it and it becomes monstrous.)

Berserk -- When Clay Golem becomes monstrous, destroy target permanent.

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

{T}, Remove a component counter from Component Pouch: Add two mana of different colors.

{T}: Roll a d20.

1--9 | Put a component counter on Component Pouch.

10--20 | Put two component counters on Component Pouch.

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.

Each player sacrifices a nontoken creature. Roll a d20 and add the toughness of the creature you sacrificed this way.

1--14 | Return a creature card put into a graveyard this way to the battlefield under your control.

15+ | Return up to two creature cards put into graveyards this way to the battlefield under your control.

Whenever Delina, Wild Mage attacks, choose target creature you control, then roll a d20.

1--14 | Create a tapped and attacking token that's a copy of that creature, except it's not legendary and it has "At end of combat, exile this creature."

15--20 | Create one of those tokens. You may roll again.

Dimir Guildgate enters the battlefield tapped.

{T}: Add {U} or {B}.

Roll a d20 and add the number of cards in your hand.

1--14 | Draw X cards.

15+ | Scry X, then draw X cards.

Flying

When Djinni Windseer enters the battlefield, roll a d20.

1--9 | Scry 1.

10--19 | Scry 2.

20 | Scry 3.

Siege Monster -- When Earth-Cult Elemental enters the battlefield, roll a d20.

1--9 | Each player sacrifices a permanent.

10--19 | Each opponent sacrifices a permanent.

20 | Each opponent sacrifices two permanents.

Ebony Fly enters the battlefield tapped.

{T}: Add {C}.

{4}: Roll a d6. Until end of turn, you may have Ebony Fly become an X/X Insect artifact creature with flying, where X is the result.

Whenever Ebony Fly attacks, another target attacking creature gains flying until end of turn.

Farideh's Fireball deals 5 damage to target creature or planeswalker. Roll a d20.

1--9 | Farideh's Fireball deals 2 damage to each player.

10--20 | Farideh's Fireball deals 2 damage to each opponent.

Dark One's Own Luck -- Whenever you roll one or more dice, Farideh, Devil's Chosen gains flying and menace until end of turn. If any of those results was 10 or higher, draw a card.

Whenever you roll one or more dice, create a 1/1 blue Faerie Dragon creature token with flying.

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

Gateway Plaza enters the battlefield tapped.

When Gateway Plaza enters the battlefield, sacrifice it unless you pay {1}.

{T}: Add one mana of any color.

Golgari Guildgate enters the battlefield tapped.

{T}: Add {B} or {G}.

Roll two d10 and choose one result. Return a creature card from your graveyard to the battlefield with a number of +1/+1 counters on it equal to that result. Then each opponent loses X life and you gain X life, where X is the other result.

{3}{G}: Roll a six-sided die. Ground Pounder gets +X/+X until end of turn, where X is the result.

Whenever you roll a 5 or higher on a die, Ground Pounder gains trample until end of turn.

Gruul Guildgate enters the battlefield tapped.

{T}: Add {R} or {G}.

Circle of Death -- {5}{B}: Roll a d20.

1--9 | Each opponent loses 2 life.

10--19 | Each opponent loses 2 life and you gain 2 life.

20 | Each opponent loses 2 life and you gain 2 life. Create two Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")

Whenever Hoarding Ogre attacks, roll a d20.

1--9 | Create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

10--19 | Create two Treasure tokens.

20 | Create three Treasure tokens.

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

Izzet Guildgate enters the battlefield tapped.

{T}: Add {U} or {R}.

Flying

As Jumbo Imp enters the battlefield, roll a six-sided die. Jumbo Imp enters the battlefield with a number of +1/+1 counters on it equal to the result.

At the beginning of your upkeep, roll a six-sided die and put a number of +1/+1 counters on Jumbo Imp equal to the result.

At the beginning of your end step, roll a six-sided die and remove a number of +1/+1 counters from Jumbo Imp equal to the result.

Flying

When Kharis & The Beholder enters the battlefield and at the beginning of your upkeep, create a 1/1 white Human creature token and make a charisma check. (Roll a d20.)

• If the result plus the number of creatures you control is greater than 11, put a +1/+1 counter on each creature you control.

• If the result is a natural 20, for each nonlegendary creature you control, create a token that's a copy of that creature.

If you would roll a die, instead roll two of those dice and ignore one of those results.

Sneak Attack -- Whenever Lightfoot Rogue attacks, roll a d20.

1--9 | Lightfoot Rogue gains deathtouch until end of turn.

10--19 | It gets +1/+0 and gains deathtouch until end of turn.

20 | It gets +3/+0 and gains first strike and deathtouch until end of turn.

{3}{G}: Roll a d20. Activate only if Loathsome Troll is in your graveyard.

1--9 | Put Loathsome Troll on top of your library.

10--19 | Return Loathsome Troll to your hand.

20 | Return Loathsome Troll to the battlefield tapped.

Equipped creature has "{T}: This creature deals 1 damage to target player or planeswalker. Roll a six-sided die. On a 5 or higher, untap it."

Equip {2}

{T}: Roll a six-sided die. On a 3 or lower, target player adds {C}. Otherwise, that player adds one mana of any color they choose.

Enchant player

Whenever enchanted player casts a noncreature spell, roll a d6. Maddening Hex deals damage to that player equal to the result. Then attach Maddening Hex to another one of your opponents chosen at random.

Maze's End enters the battlefield tapped.

{T}: Add {C}.

{3}, {T}, Return Maze's End to its owner's hand: Search your library for a Gate card, put it onto the battlefield, then shuffle. If you control ten or more Gates with different names, you win the game.

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

If a spell or ability an opponent controls causes you to discard a card, you may reveal that card and put it on top of your library instead of putting it anywhere else.

{T}: Add {C}.

Focus Beam -- At the beginning of your upkeep, roll a d4. Scry X, where X is the result.

Perfect Illumination -- Whenever you roll a die's highest natural result, draw a card.

As Neverwinter Hydra enters the battlefield, roll X d6. It enters with a number of +1/+1 counters on it equal to the total of those results.

Trample

Ward {4} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {4}.)

Orzhov Guildgate enters the battlefield tapped.

{T}: Add {W} or {B}.

At the beginning of your upkeep, roll a six-sided die. Painiac gets +X/+0 until end of turn, where X is the result.

{2}{G}, {T}: Roll a six-sided die. It becomes a green Die creature token with power and toughness each equal to its result.

{2}{U}, {T}: Reroll any die. (Activate only any time it makes sense.)

Flying

Grant an Advantage -- If you would roll one or more dice, instead roll that many dice plus one and ignore the lowest roll.

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

Choose target creature an opponent controls, then roll a d20.

1--9 | Return it to its owner's hand.

10--19 | Its owner puts it on the top or bottom of their library.

20 | Gain control of it until the end of your next turn.

Rakdos Guildgate enters the battlefield tapped.

{T}: Add {B} or {R}.

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

Roll two d12 and choose one result. Reckless Endeavor deals damage equal to that result to each creature. Then create a number of Treasure tokens equal to the other result.

You have no maximum hand size.

{T}: Add {C}.

Roll a d20 and add the number of creature cards in your graveyard that were put there from the battlefield this turn.

1--14 | Return all creature cards in your graveyard that were put there from the battlefield this turn to your hand.

15+ | Return those cards from your graveyard to the battlefield.

{T}: Add {C}.

{2}, {T}, Sacrifice a Desert: Exile all graveyards.

Flash

Cone of Cold -- When Scion of Stygia enters the battlefield, choose target creature an opponent controls, then roll a d20.

1--9 | Tap that creature.

10--20 | Tap that creature. It doesn't untap during its controller's next untap step.

Selesnya Guildgate enters the battlefield tapped.

{T}: Add {G} or {W}.

Simic Guildgate enters the battlefield tapped.

{T}: Add {G} or {U}.

Whenever Sly Spy deals combat damage to a player, roll a six-sided die. That player loses life equal to the result.

Choose up to two target permanent cards in your graveyard. Roll a d20 and add the total mana value of those cards.

1--14 | Return those cards to your hand.

15+ | Return those cards to your hand. You gain life equal to their total mana value.

Increase the result of each die you roll by 2.

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

When Swarming Goblins enters the battlefield, roll a d20.

1--9 | Create a 1/1 red Goblin creature token.

10--19 | Create two of those tokens.

20 | Create three of those tokens.

Equipped creature gets +2/+2 and has protection from Rogues and from Clerics.

Whenever equipped creature deals combat damage to a player, create a 4/4 gold Dragon creature token with flying and roll a d20 (a twenty-sided die). If you roll a 20, repeat this process.

Equip {2}

Whenever equipped creature attacks, put a +1/+1 counter on it.

Whenever equipped creature deals combat damage, roll a d12. If the result is greater than the damage dealt or the result is 12, double the number of +1/+1 counters on that creature.

Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

Vigilance

Whenever Sylvan Shepherd attacks, roll a d20.

1--9 | You gain 1 life.

10--19 | You gain 2 life.

20 | You gain 5 life.

{2}{B/R}{B/R}, {T}: Roll a six-sided die. Create a number of 1/1 red Brainiac creature tokens equal to the result.

Tap three untapped Brainiacs you control: The next time you would roll a six-sided die, instead roll two six-sided dice and use the total of those results.

{2}, {T}: Roll a d20 and subtract the number of cards in your hand. If the result is 0 or less, discard your hand.

1--9 | Return a card at random from your graveyard to your hand.

10--19 | Draw two cards.

20 | Put a creature card from any graveyard onto the battlefield under your control. When that creature dies, its owner loses the game.

Roll a six-sided die. Put target nonland permanent into its owner's library just beneath the top X cards of that library, where X is the result.

{4}, Sacrifice Treasure Chest: Roll a d20.

1 | Trapped! -- You lose 3 life.

2--9 | Create five Treasure tokens.

10--19 | You gain 3 life and draw three cards.

20 | Search your library for a card. If it's an artifact card, you may put it onto the battlefield. Otherwise, put that card into your hand. Then shuffle.

Roll two d6 and choose one result. Destroy each creature with power greater than or equal to that result. Then create a number of 2/2 white Knight creature tokens with vigilance equal to the other result.

Enrage -- Whenever Vrondiss, Rage of Ancients is dealt damage, you may create a 5/4 red and green Dragon Spirit creature token with "When this creature deals damage, sacrifice it."

Whenever you roll one or more dice, you may have Vrondiss deal 1 damage to itself.

Roll two d4 and choose one result. Create a number of 3/3 green Beast creature tokens equal to that result. Then search your library for a number of basic land cards equal to the other result, put them onto the battlefield tapped, then shuffle.

Reach

Whenever you roll a 4 or higher on a die, put a +1/+1 counter on Willing Test Subject.

{6}: Roll a six-sided die.

{T}: Exile target instant or sorcery card from a graveyard. Roll a d20. Activate only as a sorcery.

1--9 | Copy that card. You may cast the copy.

10--19 | Copy that card. You may cast the copy by paying {1} rather than paying its mana cost.

20 | Copy each card exiled with Wizard's Spellbook. You may cast any number of the copies without paying their mana costs.