As an additional cost to cast this spell, discard X cards.

Look at target opponent's hand and choose X cards from it. That player discards those cards.

Switch target creature's power and toughness until end of turn.

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and {T} this turn.)

When Akki Rockspeaker enters the battlefield, add {R}.

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

Target creature gets +4/-4 until end of turn.

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

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Blightning deals 3 damage to target player or planeswalker. That player or that planeswalker's controller discards two cards.

{T}: Target player loses 1 life.

{4}, {T}: Search your library for a Rebel permanent card with mana value 3 or less, put it onto the battlefield, then shuffle.

Haste

{T}: Target creature with power 5 or greater gains haste until end of turn.

Target creature attacks this turn if able.

Draw a card.

Boiling Earth deals 1 damage to each creature your opponents control.

Awaken 4--{6}{R} (If you cast this spell for {6}{R}, also put four +1/+1 counters on target land you control and it becomes a 0/0 Elemental creature with haste. It's still a land.)

Battalion -- Whenever Bomber Corps and at least two other creatures attack, Bomber Corps deals 1 damage to any target.

Haste

{B}: Breathstealer gets +1/-1 until end of turn.

Target creature gets +3/+3 until end of turn.

Target creature gets +3/+1 and gains trample until end of turn.

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

Creatures you control get +2/+0 until end of turn.

Defender (This creature can't attack.)

Protection from black

Trample

When Cinder Hellion enters the battlefield, it deals 2 damage to target opponent or planeswalker.

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

Sacrifice Commander's Sphere: Draw a card.

{B}: Regenerate Darkling Stalker.

{B}: Darkling Stalker gets +1/+1 until end of turn.

Buyback {3} (You may pay an additional {3} as you cast this spell. If you do, put this card into your hand as it resolves.)

Return target creature card from your graveyard to your hand.

Return target creature card from a graveyard to its owner's hand.

Conspire (As you cast this spell, you may tap two untapped creatures you control that share a color with it. When you do, copy it and you may choose a new target for the copy.)

Boast -- {1}: Target opponent loses 1 life and you gain 1 life. (Activate only if this creature attacked this turn and only once each turn.)

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

{3}{B}: Regenerate Duty-Bound Dead. (The next time this creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.)

Electrickery deals 1 damage to target creature you don't control.

Overload {1}{R} (You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each.")

Electrify deals 4 damage to target creature.

Enchant creature

Domain -- Enchanted creature gets -1/-1 for each basic land type among lands you control.

Destroy target nonartifact, nonblack creature. It can't be regenerated.

Cycling {2} ({2}, Discard this card: Draw a card.)

Flying

Whenever Eye Collector deals combat damage to a player, each player mills a card.

Destroy target creature that was dealt damage this turn. It can't be regenerated.

First strike

Boast -- {2}{R}: Fearless Pup gets +2/+0 until end of turn. (Activate only if this creature attacked this turn and only once each turn.)

When Footlight Fiend dies, it deals 1 damage to any target.

Trample, haste

Destroy target nonblack creature if its toughness is less than or equal to the number of cards in your graveyard.

Hellbent -- As long as you have no cards in hand, Gobhobbler Rats gets +1/+0 and has "{B}: Regenerate Gobhobbler Rats."

Haste

Echo {1}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

Haste

Chroma -- When Heartlash Cinder enters the battlefield, it gets +X/+0 until end of turn, where X is the number of red mana symbols in the mana costs of permanents you control.

Flying

When Kathari Bomber deals combat damage to a player, create two 1/1 red Goblin creature tokens and sacrifice Kathari Bomber.

Unearth {3}{B}{R} ({3}{B}{R}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

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

Target creature gets +2/+1 and gains deathtouch until end of turn.

{1}: Add {B} or {R}. Activate no more than three times each turn.

Flying

Destroy target creature.

Flying

{1}{B}: Nightwing Shade gets +1/+1 until end of turn.

{T}: Target player loses 1 life.

Spectacle {3}{B}{R} (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.)

When Rafter Demon enters the battlefield, if its spectacle cost was paid, each opponent discards a card.

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

{B}{R}, {T}, Sacrifice Rakdos Cluestone: Draw a card.

{T}: Rakdos Ickspitter deals 1 damage to target creature and that creature's controller loses 1 life.

{R}, Sacrifice Reckless Reveler: Destroy target artifact.

Target attacking creature gets +3/+3 and gains trample until end of turn.

When Sibsig Host enters the battlefield, each player mills three cards.

When Sibsig Icebreakers enters the battlefield, each player discards a card.

{T}: Add {R}.

Sizzle deals 3 damage to each opponent.

Sizzling Barrage deals 4 damage to target creature that blocked this turn.

Target creature gets +3/+0 and gains first strike until end of turn. (It deals combat damage before creatures without first strike.)

Haste

Enchant creature

Enchanted creature gets -3/-0.

Destroy target creature or land.

{T}, Exile two cards from your graveyard and Zombie Assassin: Destroy target nonblack creature. It can't be regenerated.