Confidence:StrongSolidPlausibleTentativeSpeculative

• Agrus Kos, Spirit of Justice

  2RW

  Legendary Creature — Spirit DetectiveRW

  Echo Tracer bounces a permanent, enabling Agrus Kos, Spirit of Justice's recast / spell-cast trigger.
• Nicol Bolas, the Ravager // Nicol Bolas, the Arisen

  1UBR

  Legendary Creature — Elder Dragon // Legendary Planeswalker — BolasBRU

  Echo Tracer bounces a permanent, enabling Nicol Bolas, the Ravager's recast / spell-cast trigger.
• Phlage, Titan of Fire's Fury

  1RW

  Legendary Creature — Elder GiantRW

  Echo Tracer bounces a permanent, enabling Phlage, Titan of Fire's Fury's recast / spell-cast trigger.
• Serene Sleuth

  1W

  Creature — Human DetectiveW

  Echo Tracer bounces a permanent, enabling Serene Sleuth's recast / spell-cast trigger.
• Bebop, Skull & Crossbones

  1B

  Legendary Creature — Boar MutantB

  Echo Tracer bounces a permanent, enabling Bebop, Skull & Crossbones's recast / spell-cast trigger.
• Bruse Tarl, Roving Rancher

  2RW

  Legendary Creature — Human WarriorRW

  Echo Tracer bounces a permanent, enabling Bruse Tarl, Roving Rancher's recast / spell-cast trigger.
• Headliner Scarlett

  3R

  Legendary Creature — Human WarlockR

  Echo Tracer bounces a permanent, enabling Headliner Scarlett's recast / spell-cast trigger.
• Wildfire Devils

  3R

  Creature — DevilR

  Echo Tracer bounces a permanent, enabling Wildfire Devils's recast / spell-cast trigger.
• Undermountain Adventurer

  3G

  Creature — Giant WarriorG

  Echo Tracer bounces a permanent, enabling Undermountain Adventurer's recast / spell-cast trigger.
• Solitude

  3WW

  Creature — Elemental IncarnationW

  Echo Tracer bounces a permanent, enabling Solitude's recast / spell-cast trigger.
• Orcish Bowmasters

  1B

  Creature — Orc ArcherB

  Echo Tracer bounces a permanent, enabling Orcish Bowmasters's recast / spell-cast trigger.
• Thassa's Oracle

  UU

  Creature — Merfolk WizardU

  Echo Tracer bounces a permanent, enabling Thassa's Oracle's recast / spell-cast trigger.
• Regal Sliver

  3W

  Creature — SliverW

  Echo Tracer bounces a permanent, enabling Regal Sliver's recast / spell-cast trigger.
• Odric, Blood-Cursed

  1RW

  Legendary Creature — Vampire SoldierRW

  Echo Tracer bounces a permanent, enabling Odric, Blood-Cursed's recast / spell-cast trigger.
• Uro, Titan of Nature's Wrath

  1GU

  Legendary Creature — Elder GiantGU

  Echo Tracer bounces a permanent, enabling Uro, Titan of Nature's Wrath's recast / spell-cast trigger.
• Lightstall Inquisitor

  W

  Creature — Angel WizardW

  Echo Tracer bounces a permanent, enabling Lightstall Inquisitor's recast / spell-cast trigger.
• Omnath, Locus of Creation

  RGWU

  Legendary Creature — ElementalGRUW

  Echo Tracer bounces a permanent, enabling Omnath, Locus of Creation's recast / spell-cast trigger.
• Floodpits Drowner

  1U

  Creature — MerfolkU

  Echo Tracer bounces a permanent, enabling Floodpits Drowner's recast / spell-cast trigger.
• Emeritus of Truce // Swords to Plowshares

  1WWW

  Creature — Cat Cleric // InstantW

  Echo Tracer bounces a permanent, enabling Emeritus of Truce's recast / spell-cast trigger.
• Ovinomancer

  2U

  Creature — Human WizardU

  Echo Tracer bounces a permanent, enabling Ovinomancer's recast / spell-cast trigger.
• Phyrexian Dreadnought

  1

  Artifact Creature — Phyrexian DreadnoughtC

  Echo Tracer bounces a permanent, enabling Phyrexian Dreadnought's recast / spell-cast trigger.
• Ajani, Nacatl Pariah // Ajani, Nacatl Avenger

  1W

  Legendary Creature — Cat Warrior // Legendary Planeswalker — AjaniRW

  Echo Tracer bounces a permanent, enabling Ajani, Nacatl Pariah's recast / spell-cast trigger.
• Raven Eagle

  2B

  Creature — Bird AssassinB

  Echo Tracer bounces a permanent, enabling Raven Eagle's recast / spell-cast trigger.
• Caves of Chaos Adventurer

  3R

  Creature — Human BarbarianR

  Echo Tracer bounces a permanent, enabling Caves of Chaos Adventurer's recast / spell-cast trigger.
• Fury

  3RR

  Creature — Elemental IncarnationR

  Echo Tracer bounces a permanent, enabling Fury's recast / spell-cast trigger.