Vela, Killer Queen

Commander

Creature (33)

• 1x Abhorrent Overlord
• 1x AEtherling
• 1x Arcanis the Omnipotent
• 1x Archaeomancer
• 1x Argent Sphinx
• 1x Avatar of Woe
• 1x Baleful Strix
• 1x Bloodline Keeper 
• 1x Carrion Feeder 
• 1x Chasm Skulker
• 1x Deadeye Navigator
• 1x Drana's Chosen
• 1x Endrek Sahr, Master Breeder
• 1x Gray Merchant of Asphodel
• 1x Josu Vess, Lich Knight
• 1x Kokusho, the Evening Star
• 1x Liliana, Heretical Healer
• 1x Meloku the Clouded Mirror
• 1x Mikaeus, the Unhallowed
• 1x Mulldrifter
• 1x Nephalia Smuggler
• 1x Nezahal, Primal Tide
• 1x Pentavus
• 1x Peregrine Drake
• 1x Reef Worm
• 1x Rune-Scarred Demon
• 1x Sengir Nosferatu
• 1x Sheoldred, Whispering One
• 1x Siren Stormtamer
• 1x Torgaar, Famine Incarnate
• 1x Triskelion
• 1x Whisper, Blood Liturgist
• 1x Wydwen, the Biting Gale

Land (36)

• 1x Choked Estuary
• 1x Command Tower
• 1x Dimir Aqueduct
• 1x Dismal Backwater
• 1x Drowned Catacomb
• 1x Evolving Wilds
• 1x Fetid Pools
• 1x Frost Marsh
• 1x High Market
• 11x Island
• 1x Jwar Isle Refuge
• 1x Memorial to Folly
• 1x Morphic Pool
• 1x Reliquary Tower
• 1x Sunken Hollow
• 1x Sunken Ruins
• 8x Swamp
• 1x Tainted Isle
• 1x Waterveil Cavern

Instant (9)

• 1x Counterspell
• 1x Cyclonic Rift
• 1x Familiar's Ruse
• 1x Geist Snatch
• 1x Hinder
• 1x Mystic Confluence
• 1x Rewind
• 1x Spell Swindle
• 1x Undermine

Planeswalker (1)

• 1x Jace, Unraveler of Secrets

Artifact (12)

• 1x Ashnod's Altar
• 1x Bident of Thassa
• 1x Commander's Sphere
• 1x Conjurer's Closet
• 1x Darksteel Ingot
• 1x Dimir Signet
• 1x Gilded Lotus
• 1x Nevinyrral's Disk
• 1x Nim Deathmantle
• 1x Panharmonicon
• 1x Sol Ring
• 1x Spawning Pit

Sorcery (4)

• 1x Diabolic Intent
• 1x Diabolic Tutor
• 1x Life's Finale
• 1x Rite of Replication

Enchantment (4)

• 1x Intruder Alarm
• 1x Mystic Remora
• 1x Sunken Hope
• 1x Xenograft

This deck has two goals: The first, is to do some damage with creatures (and tokens) that can't be blocked. The second is to combo, mostly using Vela’s "leave the battlefield" ability.

Combos:

Mikaeus, the Unhallowed + Triskelion + Sac outlet for infinite damage.

Deadeye Navigator + Peregrine Drake for infinite mana.

Bloodline Keeper + Intruder Alarm for infinite giant flying vamp tokens. Sac outlet for infinite damage.

Drana's Chosen + Intruder Alarm + Xenograft for infinite tokens. Sac them with one of the sac outlets while Vela's out, and you've got a lot of dead opponents.

Abhorrent Overlord + Ashnod's Altar + Nim Deathmantle for infinite tokens, infinite mana, and infinite damage.