Cast this spell only during combat after blockers are declared.

Flip a coin. If you win the flip, target creature gets +1/+1 until end of turn.

Draw a card at the beginning of the next turn's upkeep.

Creatures you control have trample.

Creatures your opponents control lose trample and can't have or gain trample.

Creatures you control have flying.

Creatures your opponents control lose flying and can't have or gain flying.

Nonbasic lands are Mountains.

Flying

Commander creatures you control get +2/+2 and have haste.

{T}: Flip a coin. If you win the flip, destroy all nonland permanents.

{T}: Add {C}.

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

Whenever you win a coin flip, put a luck counter on Chance Encounter.

At the beginning of your upkeep, if Chance Encounter has ten or more luck counters on it, you win the game.

At the beginning of each upkeep, count the number of permanents. If the number is odd, until end of turn, red creatures get +1/+1 and whenever a player taps a Mountain for mana, that player adds an additional {R}. If the number is even, until end of turn, red creatures get -1/-1 and if a player taps a Mountain for mana, that Mountain produces colorless mana instead of any other type.

Chaotic Goo enters with three +1/+1 counters on it.

At the beginning of your upkeep, you may flip a coin. If you win the flip, put a +1/+1 counter on Chaotic Goo. If you lose the flip, remove a +1/+1 counter from Chaotic Goo.

Cast this spell only during combat after blockers are declared.

Flip a coin. If you win the flip, target creature gets +1/+1 until end of turn.

Draw a card.

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

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

Sacrifice Commander's Sphere: Draw a card.

When Crazed Firecat enters the battlefield, flip a coin until you lose a flip. Put a +1/+1 counter on Crazed Firecat for each flip you won.

Indestructible

Whenever Creepy Doll deals combat damage to a creature, flip a coin. If you win the flip, destroy that creature.

{T}: Add {C}.

{1}{U}{R}, {T}: Draw a card, then discard a card.

Choose a source you control and flip a coin. If you win the flip, the next time that source would deal damage this turn, it deals double that damage instead. If you lose the flip, the next time it would deal damage this turn, prevent that damage.

Until end of turn, target creature you control gains trample and gets +X/+0, where X is its power. Sacrifice it at the beginning of the next end step.

Flip a coin until you lose a flip or choose to stop flipping. If you lose a flip, Fiery Gambit has no effect. If you win one or more flips, Fiery Gambit deals 3 damage to target creature. If you win two or more flips, Fiery Gambit deals 6 damage to each opponent. If you win three or more flips, draw nine cards and untap all lands you control.

For each blocking creature, flip a coin. If you win the flip, prevent all combat damage that would be dealt by that creature this turn.

As an additional cost to cast this spell, sacrifice a creature.

Fling deals damage equal to the sacrificed creature's power to any target.

Flying

{0}: Flip a coin. If you win the flip, Frenetic Efreet phases out. If you lose the flip, sacrifice Frenetic Efreet. (While it's phased out, it's treated as though it doesn't exist. It phases in before you untap during your next untap step.)

Flip a coin. If you win the flip, you gain 1 life and target opponent loses 1 life, and you decide whether to flip again. If you lose the flip, you lose 1 life and that opponent gains 1 life, and that player decides whether to flip again. Double the life stakes with each flip.

Red creatures get +1/+1.

Whenever a Mountain is tapped for mana, its controller adds an additional {R}.

Trample

Whenever Geode Golem deals combat damage to a player, you may cast your commander from the command zone without paying its mana cost. (You still pay any additional costs.)

{R}, {T}: Flip a coin. If you win the flip, destroy target artifact and untap Goblin Archaeologist. If you lose the flip, sacrifice Goblin Archaeologist.

{T}: Flip a coin. If you win the flip, Goblin Bangchuckers deals 2 damage to any target. If you lose the flip, Goblin Bangchuckers deals 2 damage to itself.

At the beginning of your upkeep, you may flip a coin. If you win the flip, put a fuse counter on Goblin Bomb. If you lose the flip, remove a fuse counter from Goblin Bomb.

Remove five fuse counters from Goblin Bomb and sacrifice it: It deals 20 damage to target player or planeswalker.

At the beginning of your upkeep, create a colorless artifact token named Land Mine with "{R}, Sacrifice this artifact: This artifact deals 2 damage to target attacking creature without flying." Then flip a coin. If you lose the flip, Goblin Kaboomist deals 2 damage to itself.

Defender

{2}: Golden Guardian fights another target creature you control. When Golden Guardian dies this turn, return it to the battlefield transformed under your control.

(Transforms from Golden Guardian.)

{T}: Add two mana of any one color.

{4}, {T}: Create a 4/4 colorless Golem artifact creature token.

{T}: Add {C}.

{R}, {T}: Target creature gains haste until end of turn.

{3}{R}{R}, {T}: If you both own and control Hanweir Battlements and a creature named Hanweir Garrison, exile them, then meld them into Hanweir, the Writhing Township.

Whenever Hanweir Garrison attacks, create two 1/1 red Human creature tokens that are tapped and attacking.

(Melds with Hanweir Battlements.)

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

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

Izzet Boilerworks enters tapped.

When Izzet Boilerworks enters, return a land you control to its owner's hand.

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

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

{U}{R}, {T}, Sacrifice Izzet Cluestone: Draw a card.

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

Cumulative upkeep--Flip a coin. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Whenever you win a coin flip, Karplusan Minotaur deals 1 damage to any target.

Whenever you lose a coin flip, Karplusan Minotaur deals 1 damage to any target of an opponent's choice.

Indestructible

As long as your devotion to blue and red is less than seven, Keranos isn't a creature.

Reveal the first card you draw on each of your turns. Whenever you reveal a land card this way, draw a card. Whenever you reveal a nonland card this way, Keranos deals 3 damage to any target.

If you would flip a coin, instead flip two coins and ignore one.

Equipped creature gets +3/+0 and has trample and lifelink.

Equip {3}

Nonbasic lands are Mountains.

You and target opponent each flip a coin. Mana Clash deals 1 damage to each player whose coin comes up tails. Repeat this process until both players' coins come up heads on the same flip.

At the beginning of your upkeep, flip a coin. If you lose the flip, Mana Crypt deals 3 damage to you.

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

Whenever Mijae Djinn attacks, flip a coin. If you lose the flip, remove Mijae Djinn from combat and tap it.

{T}: Add {U}.

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

Counter target spell unless its controller pays {X}. Mindswipe deals X damage to that spell's controller.

Other blue creatures you control get +1/+1.

Other red creatures you control get +1/+1.

{U/R}{U/R}{U/R}{U/R}: You may put a blue or red creature card from your hand onto the battlefield.

Whenever a nontoken creature enters the battlefield under your control, flip a coin until you lose a flip. For each flip you won, create a token that's a copy of that creature. Those tokens gain haste. Exile them at the beginning of the next end step.

{T}: You choose target creature an opponent controls, and that opponent chooses target creature. Flip a coin. If you win the flip, destroy the creature you chose. If you lose the flip, destroy the creature your opponent chose.

Create two 1/1 red Elemental creature tokens, then flip a coin. If you win the flip, return Molten Birth to its owner's hand.

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

Flying

Whenever Niv-Mizzet, Dracogenius deals damage to a player, you may draw a card.

{U}{R}: Niv-Mizzet, Dracogenius deals 1 damage to any target.

This spell can't be countered.

Flying

Whenever you draw a card, Niv-Mizzet, Parun deals 1 damage to any target.

Whenever a player casts an instant or sorcery spell, you draw a card.

Flying

Whenever you draw a card, Niv-Mizzet, the Firemind deals 1 damage to any target.

{T}: Draw a card.

Partner with Zndrsplt, Eye of Wisdom (When this creature enters the battlefield, target player may put Zndrsplt into their hand from their library, then shuffle.)

At the beginning of combat on your turn, flip a coin until you lose a flip.

Whenever a player wins a coin flip, double Okaun's power and toughness until end of turn.

{T}: Add {C}.

{1}, {T}: Add one mana of any color in your commander's color identity. If you spend this mana to cast your commander, it enters the battlefield with a number of additional +1/+1 counters on it equal to the number of times it's been cast from the command zone this game.

+1: Tap target permanent, then untap another target permanent.

-2: Ral Zarek deals 3 damage to any target.

-7: Flip five coins. Take an extra turn after this one for each coin that comes up heads.

You have no maximum hand size.

{T}: Add {C}.

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.)

+2: During target player's next turn, each creature that player controls attacks if able.

-2: Rowan Kenrith deals 3 damage to each tapped creature target player controls.

-8: Target player gets an emblem with "Whenever you activate an ability that isn't a mana ability, copy it. You may choose new targets for the copy."

Partner with Will Kenrith

Rowan Kenrith can be your commander.

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

At the beginning of your upkeep, flip a coin. If you lose the flip, return Scoria Wurm to its owner's hand.

{T}: Add {R}.

{R}, {T}: Target legendary creature gains first strike until end of turn.

{T}: Add {C}.

{T}: Add {U} or {R}. Shivan Reef deals 1 damage to you.

Whenever Skyclaw Thrash attacks, flip a coin. If you win the flip, Skyclaw Thrash gets +1/+1 and gains flying until end of turn.

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

Whenever you draw a card, target opponent mills two cards. If two nonland cards that share a color were milled this way, repeat this process.

{5}{U}: Draw a card, then discard a card.

Spirebluff Canal enters the battlefield tapped unless you control two or fewer other lands.

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

Choose a number. Flip a coin that many times or until you lose a flip, whichever comes first. If you win all the flips, draw two cards for each flip.

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

As Steam Vents enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

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

Hexproof

Lieutenant -- As long as you control your commander, Stormsurge Kraken gets +2/+2 and has "Whenever Stormsurge Kraken becomes blocked, you may draw two cards."

Sulfur Falls enters tapped unless you control an Island or a Mountain.

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

Temple of Epiphany enters tapped.

When Temple of Epiphany enters, scry 1.

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

{T}: Add {C}{C}. Activate only if you control five or more lands.

Equipped creature gets +1/+1. As long as it's legendary, it gets an additional +2/+2. As long as it's red, it has trample.

Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Flying

Whenever you draw a card, create a 1/1 blue and red Insect creature token with flying and haste.

{2}{U}{R}: Draw a card, then discard a card.

When The Locust God dies, return it to its owner's hand at the beginning of the next end step.

As an additional cost to cast this spell, sacrifice a creature.

Thud deals damage equal to the sacrificed creature's power to any target.

Whenever Two-Headed Giant attacks, flip two coins. If both coins come up heads, Two-Headed Giant gains double strike until end of turn. If both coins come up tails, Two-Headed Giant gains menace until end of turn.

Flying, haste

Lieutenant -- As long as you control your commander, Tyrant's Familiar gets +2/+2 and has "Whenever Tyrant's Familiar attacks, it deals 7 damage to target creature defending player controls."

Trample

Volatile Rig attacks each combat if able.

Whenever Volatile Rig is dealt damage, flip a coin. If you lose the flip, sacrifice Volatile Rig.

When Volatile Rig dies, flip a coin. If you lose the flip, it deals 4 damage to each creature and each player.

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

Wandering Fumarole enters the battlefield tapped.

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

{2}{U}{R}: Until end of turn, Wandering Fumarole becomes a 1/4 blue and red Elemental creature with "{0}: Switch this creature's power and toughness until end of turn." It's still a land.

+2: Until your next turn, up to two target creatures each have base power and toughness 0/3 and lose all abilities.

-2: Target player draws two cards. Until your next turn, instant, sorcery, and planeswalker spells that player casts cost {2} less to cast.

-8: Target player gets an emblem with "Whenever you cast an instant or sorcery spell, copy it. You may choose new targets for the copy."

Partner with Rowan Kenrith

Will Kenrith can be your commander.

Flip a coin. If you win the flip, Winter Sky deals 1 damage to each creature and each player. If you lose the flip, each player draws a card.

Whenever Ydwen Efreet blocks, flip a coin. If you lose the flip, remove Ydwen Efreet from combat and it can't block this turn. Creatures it was blocking that had become blocked by only Ydwen Efreet this combat become unblocked.

Partner with Okaun, Eye of Chaos (When this creature enters the battlefield, target player may put Okaun into their hand from their library, then shuffle.)

At the beginning of combat on your turn, flip a coin until you lose a flip.

Whenever a player wins a coin flip, draw a card.