Confidence:StrongSolidPlausibleTentativeSpeculative

• Agrus Kos, Spirit of Justice

  2RW

  Legendary Creature — Spirit DetectiveRW

  Grim Reaper, Lethal Legionnaire returns creatures from the graveyard to the battlefield, re-firing Agrus Kos, Spirit of Justice's enter-the-battlefield effect.
• Nicol Bolas, the Ravager // Nicol Bolas, the Arisen

  1UBR

  Legendary Creature — Elder Dragon // Legendary Planeswalker — BolasBRU

  Grim Reaper, Lethal Legionnaire returns creatures from the graveyard to the battlefield, re-firing Nicol Bolas, the Ravager's enter-the-battlefield effect.
• Obsessive Pursuit

  1B

  EnchantmentB

  Both cards trigger when a permanent attacks — they fire together.
• Tinybones Joins Up

  B

  Legendary EnchantmentB

  Grim Reaper, Lethal Legionnaire returns creatures from the graveyard to the battlefield, re-firing Tinybones Joins Up's enter-the-battlefield effect.
• Banon, the Returners' Leader

  RW

  Legendary Creature — Human Cleric RebelRW

  Both cards trigger when a permanent attacks — they fire together.
• Season of Growth

  1G

  EnchantmentG

  Grim Reaper, Lethal Legionnaire returns creatures from the graveyard to the battlefield, re-firing Season of Growth's enter-the-battlefield effect.
• Serene Sleuth

  1W

  Creature — Human DetectiveW

  Grim Reaper, Lethal Legionnaire returns creatures from the graveyard to the battlefield, re-firing Serene Sleuth's enter-the-battlefield effect.
• Garruk, Apex Predator

  5BG

  Legendary Planeswalker — GarrukBG

  Both cards trigger when a permanent attacks — they fire together.
• Bebop, Skull & Crossbones

  1B

  Legendary Creature — Boar MutantB

  Grim Reaper, Lethal Legionnaire returns creatures from the graveyard to the battlefield, re-firing Bebop, Skull & Crossbones's enter-the-battlefield effect.
• Bruse Tarl, Roving Rancher

  2RW

  Legendary Creature — Human WarriorRW

  Grim Reaper, Lethal Legionnaire returns creatures from the graveyard to the battlefield, re-firing Bruse Tarl, Roving Rancher's enter-the-battlefield effect.
• Headliner Scarlett

  3R

  Legendary Creature — Human WarlockR

  Grim Reaper, Lethal Legionnaire returns creatures from the graveyard to the battlefield, re-firing Headliner Scarlett's enter-the-battlefield effect.
• Wildfire Devils

  3R

  Creature — DevilR

  Grim Reaper, Lethal Legionnaire returns creatures from the graveyard to the battlefield, re-firing Wildfire Devils's enter-the-battlefield effect.
• Undermountain Adventurer

  3G

  Creature — Giant WarriorG

  Grim Reaper, Lethal Legionnaire returns creatures from the graveyard to the battlefield, re-firing Undermountain Adventurer's enter-the-battlefield effect.
• Solitude

  3WW

  Creature — Elemental IncarnationW

  Grim Reaper, Lethal Legionnaire returns creatures from the graveyard to the battlefield, re-firing Solitude's enter-the-battlefield effect.
• Thassa's Oracle

  UU

  Creature — Merfolk WizardU

  Grim Reaper, Lethal Legionnaire returns creatures from the graveyard to the battlefield, re-firing Thassa's Oracle's enter-the-battlefield effect.
• Regal Sliver

  3W

  Creature — SliverW

  Grim Reaper, Lethal Legionnaire returns creatures from the graveyard to the battlefield, re-firing Regal Sliver's enter-the-battlefield effect.
• Odric, Blood-Cursed

  1RW

  Legendary Creature — Vampire SoldierRW

  Grim Reaper, Lethal Legionnaire returns creatures from the graveyard to the battlefield, re-firing Odric, Blood-Cursed's enter-the-battlefield effect.
• Gallia of the Endless Dance

  RG

  Legendary Creature — SatyrGR

  Both cards trigger when a permanent attacks — they fire together.
• Lightstall Inquisitor

  W

  Creature — Angel WizardW

  Grim Reaper, Lethal Legionnaire returns creatures from the graveyard to the battlefield, re-firing Lightstall Inquisitor's enter-the-battlefield effect.
• Omnath, Locus of Creation

  RGWU

  Legendary Creature — ElementalGRUW

  Grim Reaper, Lethal Legionnaire returns creatures from the graveyard to the battlefield, re-firing Omnath, Locus of Creation's enter-the-battlefield effect.
• Floodpits Drowner

  1U

  Creature — MerfolkU

  Grim Reaper, Lethal Legionnaire returns creatures from the graveyard to the battlefield, re-firing Floodpits Drowner's enter-the-battlefield effect.
• Kiora, Master of the Depths

  2GU

  Legendary Planeswalker — KioraGU

  Grim Reaper, Lethal Legionnaire returns creatures from the graveyard to the battlefield, re-firing Kiora, Master of the Depths's enter-the-battlefield effect.
• Avatar Roku, Firebender

  3RRR

  Legendary Creature — Human AvatarR

  Both cards trigger when a permanent attacks — they fire together.
• Emeritus of Truce // Swords to Plowshares

  1WWW

  Creature — Cat Cleric // InstantW

  Grim Reaper, Lethal Legionnaire returns creatures from the graveyard to the battlefield, re-firing Emeritus of Truce's enter-the-battlefield effect.
• Invasion of New Capenna // Holy Frazzle-Cannon

  WB

  Battle — Siege // Artifact — EquipmentBW

  Both cards trigger when a permanent attacks — they fire together.