Flying

Whenever Ancient Brass Dragon deals combat damage to a player, roll a d20. When you do, put any number of target creature cards with total mana value X or less from graveyards onto the battlefield under your control, where X is the result.

Flying

Whenever Ancient Copper Dragon deals combat damage to a player, roll a d20. You create a number of Treasure tokens equal to the result.

Flying

Whenever Ancient Gold Dragon deals combat damage to a player, roll a d20. You create a number of 1/1 blue Faerie Dragon creature tokens with flying equal to the result.

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.

At the beginning of your upkeep, roll a six-sided die. If you roll a 6, sacrifice Chicken Egg and create a 4/4 red Giant Bird creature token.

{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.

0: Roll a six-sided die.

1 or 2 -- [+2], then create two 1/1 green Squirrel creature tokens. They gain haste until end of turn.

3 -- [-1], then return a card with mana value 2 or less from your graveyard to your hand.

4 or 5 -- Comet, Stellar Pup deals damage equal to the number of loyalty counters on him to a creature or player, then [-2].

6 -- [+1], and you may activate Comet, Stellar Pup's loyalty ability two more times this turn.

{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.

Exile target creature, then roll a d20.

1--9 | Its controller creates a 4/4 green Ox creature token.

10--19 | Its controller creates a 2/2 green Boar creature token.

20 | Its controller creates a 0/1 white Goat creature token.

Target creature gains double strike until end of turn.

When you roll a natural 20, return Critical Hit from your graveyard to your hand. (A natural 20 is a roll that displays 20 on the die.)

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.

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.

Reach

Whenever you roll a die, if the result isn't stored on Goblin Girder Gang, you may store that result on it. When you do, Goblin Girder Gang deals 1 damage to any target without a hat.

Goblin Girder Gang gets +1/+0 for each result stored on it.

Equipped creature gets +1/+0 and has trample.

Equip {1}{R}

When Goblin Morningstar enters the battlefield, roll a d20.

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

10--20 | Create a 1/1 red Goblin creature token, then attach Goblin Morningstar to it.

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

Whenever you roll a die, remove all +1/+1 counters from Hammer Jammer, then put a number of +1/+1 counters on it equal to the result.

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.

At the beginning of your upkeep, roll a six-sided die. On a 3 or 4, put a +1/+1 counter on Inhumaniac. On a 5 or higher, put two +1/+1 counters on it. On a 1, remove all +1/+1 counters from Inhumaniac.

Whenever Iron Mastiff attacks, roll a d20 for each player being attacked and ignore all but the highest roll.

1--9 | Iron Mastiff deals damage equal to its power to you.

10--19 | Iron Mastiff deals damage equal to its power to defending player.

20 | Iron Mastiff deals damage equal to its power to each opponent.

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.

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

At the beginning of your upkeep, roll a six-sided die. If you a roll a 1, sacrifice Krazy Kow and it deals 3 damage to each creature and each player.

Exile all nontoken creatures you control, then roll a d20.

1--9 | Return those cards to the battlefield under their owner's control at the beginning of the next end step.

10--20 | Return those cards to the battlefield under their owner's control, then exile them again. Return those cards to the battlefield under their owner's control at the beginning of the next end step.

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.

{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.

Whenever you roll a 3 or higher, Monoxa, Midway Manager gains first strike until end of turn. If the roll was 4 or higher, it gains menace until end of turn. If the roll was 5 or higher, it gains lifelink until end of turn.

{6}: Roll a six-sided die.

Whenever you roll a 4 or higher, create a 3/3 colorless Robot artifact creature token. If you rolled 6 or higher, instead create that token and a Treasure token.

{4}, {T}: Roll a six-sided die plus an additional six-sided die for each mana from Treasures spent to activate this ability.

Roll a d20.

1--9 | Choose an opponent. That player sacrifices a creature.

10--19 | Each opponent sacrifices a creature.

20 | Each opponent sacrifices a creature with the greatest power among creatures that player controls.

After you roll a die, you may pay 1 life. If you do, increase or decrease the result by 1. Do this only once each turn.

Whenever you roll a 6, create a 2/2 black Zombie Employee creature token.

Weird Insight -- When Nothic dies, roll a d20.

1--9 | You draw a card and you lose 1 life.

10--19 | You draw two cards and you lose 2 life.

20 | You draw seven cards and you lose 7 life.

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

Flying

Whenever a creature dies, you may roll a six-sided die. If you roll a 1, sacrifice Poultrygeist. Otherwise, put a +1/+1 counter on Poultrygeist.

Whenever you roll a die, you may reveal the top card of your library. Do this only once each turn. Whenever you reveal a card with mana value less than the result this way, you may exile it. If you do, you may play it this turn.

Roll a d20.

1--9 | Create two 1/1 white Soldier creature tokens.

10--19 | Create two 2/2 white Knight creature tokens.

20 | Create three 2/2 white Knight creature tokens.

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.

Whenever Sly Spy deals combat damage to a player, that player reveals their hand. You choose a card from it with the longest name. That player discards that card.

Flash

{5}, {T}, Sacrifice Spiked Pit Trap: Choose target creature, then roll a d20.

1--9 | Spiked Pit Trap deals 5 damage to that creature.

10--20 | Spiked Pit Trap deals 5 damage to that creature. Create a Treasure token.

Whenever you roll a 5 or higher on a die, Steel Squirrel gets +X/+X until end of turn, where X is the result.

{6}: Roll a six-sided die.

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.)

{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 d20.

1--9 | Thunderwave deals 3 damage to each creature.

10--19 | You may choose a creature. Thunderwave deals 3 damage to each creature not chosen this way.

20 | Thunderwave deals 6 damage to each creature your opponents control.

{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.

{T}: Add {C}.

{5}, {T}, Exile Underdark Rift: Roll a d10. Put target artifact, creature, or planeswalker into its owner's library just beneath the top X cards of that library, where X is the result. Activate only as a sorcery.

Whenever you roll one or more dice, put a number of charge counters on Vexing Puzzlebox equal to the result.

{T}: Add one mana of any color. Roll a d20.

{T}, Remove 100 charge counters from Vexing Puzzlebox: Search your library for an artifact card, put that card onto the battlefield, then shuffle.

{4}, {T}: Roll a d20. Each opponent exiles cards from the top of their library until they exile an instant or sorcery card, then shuffles the rest into their library. You may cast up to X instant and/or sorcery spells from among cards exiled this way without paying their mana costs.

1--9 | X is one.

10--19 | X is two.

20 | X is three.

Choose target spell or ability with one or more targets. Roll a d20 and add the greatest power among creatures you control.

1--14 | You may choose new targets for that spell or ability.

15+ | You may choose new targets for that spell or ability. Then copy it. You may choose new targets for the copy.

Xenosquirrels enters the battlefield with two +1/+1 counters on it.

After you roll a die, you may remove a +1/+1 counter from Xenosquirrels. If you do, increase or decrease the result by 1.