Fluctuator combo by Alessandro Nicois

Main Deck

Cloud of Faeries
Creature — Faerie
Flying
When Cloud of Faeries enters the battlefield, untap up to two lands.
Cycling (, Discard this card: Draw a card.)
Fluctuator
Artifact
Cycling abilities you activate cost up to less to activate.
Keeneye Aven
Creature — Bird Soldier
Flying
Cycling (, Discard this card: Draw a card.)
Pendrell Drake
Creature — Drake
Flying
Cycling (, Discard this card: Draw a card.)
Primoc Escapee
Creature — Bird Beast
Flying
Cycling (, Discard this card: Draw a card.)
Cloud of Faeries
Creature — Faerie
Flying
When Cloud of Faeries enters the battlefield, untap up to two lands.
Cycling (, Discard this card: Draw a card.)
Fluctuator
Artifact
Cycling abilities you activate cost up to less to activate.
Keeneye Aven
Creature — Bird Soldier
Flying
Cycling (, Discard this card: Draw a card.)
Pendrell Drake
Creature — Drake
Flying
Cycling (, Discard this card: Draw a card.)
Primoc Escapee
Creature — Bird Beast
Flying
Cycling (, Discard this card: Draw a card.)
Cloud of Faeries
Creature — Faerie
Flying
When Cloud of Faeries enters the battlefield, untap up to two lands.
Cycling (, Discard this card: Draw a card.)
Fluctuator
Artifact
Cycling abilities you activate cost up to less to activate.
Keeneye Aven
Creature — Bird Soldier
Flying
Cycling (, Discard this card: Draw a card.)
Pendrell Drake
Creature — Drake
Flying
Cycling (, Discard this card: Draw a card.)
Primoc Escapee
Creature — Bird Beast
Flying
Cycling (, Discard this card: Draw a card.)
Cloud of Faeries
Creature — Faerie
Flying
When Cloud of Faeries enters the battlefield, untap up to two lands.
Cycling (, Discard this card: Draw a card.)
Fluctuator
Artifact
Cycling abilities you activate cost up to less to activate.
Keeneye Aven
Creature — Bird Soldier
Flying
Cycling (, Discard this card: Draw a card.)
Pendrell Drake
Creature — Drake
Flying
Cycling (, Discard this card: Draw a card.)
Primoc Escapee
Creature — Bird Beast
Flying
Cycling (, Discard this card: Draw a card.)
Sandbar Merfolk
Creature — Merfolk
Cycling (, Discard this card: Draw a card.)
Drifting Djinn
Creature — Djinn
Flying
At the beginning of your upkeep, sacrifice Drifting Djinn unless you pay .
Cycling (, Discard this card: Draw a card.)
Sandbar Serpent
Creature — Serpent
Cycling (, Discard this card: Draw a card.)
Expunge
Instant
Destroy target nonartifact, nonblack creature. It can't be regenerated.
Cycling (, Discard this card: Draw a card.)
Rebuild
Instant
Return all artifacts to their owners' hands.
Cycling (, Discard this card: Draw a card.)
Sandbar Merfolk
Creature — Merfolk
Cycling (, Discard this card: Draw a card.)
Drifting Djinn
Creature — Djinn
Flying
At the beginning of your upkeep, sacrifice Drifting Djinn unless you pay .
Cycling (, Discard this card: Draw a card.)
Sandbar Serpent
Creature — Serpent
Cycling (, Discard this card: Draw a card.)
Gilded Light
Instant
You gain shroud until end of turn. (You can't be the target of spells or abilities.)
Cycling (, Discard this card: Draw a card.)
Skeletal Scrying
Instant
As an additional cost to cast this spell, exile X cards from your graveyard.
You draw X cards and you lose X life.
Sandbar Merfolk
Creature — Merfolk
Cycling (, Discard this card: Draw a card.)
Drifting Djinn
Creature — Djinn
Flying
At the beginning of your upkeep, sacrifice Drifting Djinn unless you pay .
Cycling (, Discard this card: Draw a card.)
Songs of the Damned
Instant
Add for each creature card in your graveyard.
Lotus Petal
Artifact
, Sacrifice Lotus Petal: Add one mana of any color.
Smoldering Crater
Land
Smoldering Crater enters the battlefield tapped.
: Add .
Cycling (, Discard this card: Draw a card.)
Sandbar Merfolk
Creature — Merfolk
Cycling (, Discard this card: Draw a card.)
Drain Life
Sorcery
Spend only black mana on X.
Drain Life deals X damage to any target. You gain life equal to the damage dealt, but not more life than the player's life total before the damage was dealt, the planeswalker's loyalty before the damage was dealt, or the creature's toughness.
Songs of the Damned
Instant
Add for each creature card in your graveyard.
Miscalculation
Instant
Counter target spell unless its controller pays .
Cycling (, Discard this card: Draw a card.)
Smoldering Crater
Land
Smoldering Crater enters the battlefield tapped.
: Add .
Cycling (, Discard this card: Draw a card.)
Blasted Landscape
Land
: Add .
Cycling (, Discard this card: Draw a card.)
Drifting Meadow
Land
Drifting Meadow enters the battlefield tapped.
: Add .
Cycling (, Discard this card: Draw a card.)
Polluted Mire
Land
Polluted Mire enters the battlefield tapped.
: Add .
Cycling (, Discard this card: Draw a card.)
Remote Isle
Land
Remote Isle enters the battlefield tapped.
: Add .
Cycling (, Discard this card: Draw a card.)
Slippery Karst
Land
Slippery Karst enters the battlefield tapped.
: Add .
Cycling (, Discard this card: Draw a card.)
Blasted Landscape
Land
: Add .
Cycling (, Discard this card: Draw a card.)
Drifting Meadow
Land
Drifting Meadow enters the battlefield tapped.
: Add .
Cycling (, Discard this card: Draw a card.)
Polluted Mire
Land
Polluted Mire enters the battlefield tapped.
: Add .
Cycling (, Discard this card: Draw a card.)
Remote Isle
Land
Remote Isle enters the battlefield tapped.
: Add .
Cycling (, Discard this card: Draw a card.)
Slippery Karst
Land
Slippery Karst enters the battlefield tapped.
: Add .
Cycling (, Discard this card: Draw a card.)
Blasted Landscape
Land
: Add .
Cycling (, Discard this card: Draw a card.)
Drifting Meadow
Land
Drifting Meadow enters the battlefield tapped.
: Add .
Cycling (, Discard this card: Draw a card.)
Polluted Mire
Land
Polluted Mire enters the battlefield tapped.
: Add .
Cycling (, Discard this card: Draw a card.)
Remote Isle
Land
Remote Isle enters the battlefield tapped.
: Add .
Cycling (, Discard this card: Draw a card.)
Slippery Karst
Land
Slippery Karst enters the battlefield tapped.
: Add .
Cycling (, Discard this card: Draw a card.)
Blasted Landscape
Land
: Add .
Cycling (, Discard this card: Draw a card.)
Drifting Meadow
Land
Drifting Meadow enters the battlefield tapped.
: Add .
Cycling (, Discard this card: Draw a card.)
Polluted Mire
Land
Polluted Mire enters the battlefield tapped.
: Add .
Cycling (, Discard this card: Draw a card.)
Remote Isle
Land
Remote Isle enters the battlefield tapped.
: Add .
Cycling (, Discard this card: Draw a card.)
Slippery Karst
Land
Slippery Karst enters the battlefield tapped.
: Add .
Cycling (, Discard this card: Draw a card.)
Dromar's Cavern
Land — Lair
When Dromar's Cavern enters the battlefield, sacrifice it unless you return a non-Lair land you control to its owner's hand.
: Add , , or .

Side

Misdirection
Instant
You may exile a blue card from your hand rather than pay this spell's mana cost.
Change the target of target spell with a single target.
Misdirection
Instant
You may exile a blue card from your hand rather than pay this spell's mana cost.
Change the target of target spell with a single target.
Misdirection
Instant
You may exile a blue card from your hand rather than pay this spell's mana cost.
Change the target of target spell with a single target.
Misdirection
Instant
You may exile a blue card from your hand rather than pay this spell's mana cost.
Change the target of target spell with a single target.
Miscalculation
Instant
Counter target spell unless its controller pays .
Cycling (, Discard this card: Draw a card.)
Miscalculation
Instant
Counter target spell unless its controller pays .
Cycling (, Discard this card: Draw a card.)
Miscalculation
Instant
Counter target spell unless its controller pays .
Cycling (, Discard this card: Draw a card.)
Gilded Light
Instant
You gain shroud until end of turn. (You can't be the target of spells or abilities.)
Cycling (, Discard this card: Draw a card.)
Clear
Instant
Destroy target enchantment.
Cycling (, Discard this card: Draw a card.)
Clear
Instant
Destroy target enchantment.
Cycling (, Discard this card: Draw a card.)
Expunge
Instant
Destroy target nonartifact, nonblack creature. It can't be regenerated.
Cycling (, Discard this card: Draw a card.)
Expunge
Instant
Destroy target nonartifact, nonblack creature. It can't be regenerated.
Cycling (, Discard this card: Draw a card.)
Twilight's Call
Sorcery
You may cast Twilight's Call as though it had flash if you pay more to cast it. (You may cast it any time you could cast an instant.)
Each player returns all creature cards from their graveyard to the battlefield.
Twilight's Call
Sorcery
You may cast Twilight's Call as though it had flash if you pay more to cast it. (You may cast it any time you could cast an instant.)
Each player returns all creature cards from their graveyard to the battlefield.
Repopulate
Instant
Shuffle all creature cards from target player's graveyard into that player's library.
Cycling (, Discard this card: Draw a card.)