Confidence:StrongSolidPlausibleTentativeSpeculative

• Reanimate

  B

  SorceryB

  Reanimate puts Manticore Eternal onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Grave Researcher // Reanimate

  2BB

  Creature — Troll Warlock // SorceryB

  Grave Researcher puts Manticore Eternal onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Labyrinth Raptor

  BR

  Creature — Nightmare DinosaurBR

  Both cards trigger when a permanent blocks — they fire together.
• Priest of Fell Rites

  WB

  Creature — Human WarlockBW

  Priest of Fell Rites puts Manticore Eternal onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Laccolith Rig

  R

  Enchantment — AuraR

  Both cards trigger when a permanent blocks — they fire together.
• Grazilaxx, Illithid Scholar

  1UU

  Legendary Creature — HorrorU

  Both cards trigger when a permanent blocks — they fire together.
• Animate Dead

  1B

  Enchantment — AuraB

  Animate Dead puts Manticore Eternal onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Exhume

  1B

  SorceryB

  Exhume puts Manticore Eternal onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Simian Sling

  R

  Artifact Creature — Equipment MonkeyR

  Both cards trigger when a permanent blocks — they fire together.
• Life // Death

  G1B

  Sorcery // SorceryBG

  Life puts Manticore Eternal onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Dance of the Dead

  1B

  Enchantment — AuraB

  Dance of the Dead puts Manticore Eternal onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Persist

  1B

  SorceryB

  Persist puts Manticore Eternal onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Soul Exchange

  BB

  SorceryB

  Soul Exchange puts Manticore Eternal onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Dwindle

  2U

  Enchantment — AuraU

  Both cards trigger when a permanent blocks — they fire together.
• Powerstone Minefield

  2RW

  EnchantmentRW

  Both cards trigger when a permanent blocks — they fire together.
• Trailblazer's Torch

  4

  Artifact — EquipmentC

  Both cards trigger when a permanent blocks — they fire together.
• Mirror Shield

  2

  Artifact — EquipmentC

  Both cards trigger when a permanent blocks — they fire together.
• Roaming Throne

  4

  Artifact Creature — GolemC

  Roaming Throne makes Manticore Eternal's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Primal Cocoon

  G

  Enchantment — AuraG

  Both cards trigger when a permanent blocks — they fire together.
• Nivea, Beloved Battlemage

  2W

  Legendary Creature — Human Wizard WarriorW

  Both cards trigger when a permanent blocks — they fire together.
• Mirror Room // Fractured Realm

  2U5UU

  Enchantment — Room // Enchantment — RoomU

  Mirror Room makes Manticore Eternal's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Tormentor's Helm

  R

  Artifact — EquipmentR

  Both cards trigger when a permanent blocks — they fire together.
• Infinite Authority

  WWW

  Enchantment — AuraW

  Both cards trigger when a permanent blocks — they fire together.
• No Quarter

  3R

  EnchantmentR

  Both cards trigger when a permanent blocks — they fire together.
• Rat King, Verminister

  1B

  Legendary Creature — Rat AvatarB

  Rat King, Verminister puts Manticore Eternal onto the battlefield from a graveyard without casting it, so its mana cost is never paid.