Confidence:StrongSolidPlausibleTentativeSpeculative

• Sygg, Wanderwine Wisdom // Sygg, Wanderbrine Shield

  1U

  Legendary Creature — Merfolk Wizard // Legendary Creature — Merfolk RogueUW

  Both cards trigger on damage dealt — they fire together.
• Reanimate

  B

  SorceryB

  Reanimate puts Obsessive Collector 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 Obsessive Collector onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Priest of Fell Rites

  WB

  Creature — Human WarlockBW

  Priest of Fell Rites puts Obsessive Collector onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Gonti, Night Minister

  2BB

  Legendary Creature — Aetherborn RogueB

  Both cards trigger on damage dealt — they fire together.
• Lost Jitte

  1

  Legendary Artifact — EquipmentC

  Both cards trigger on damage dealt — they fire together.
• Life // Death

  G1B

  Sorcery // SorceryBG

  Life puts Obsessive Collector onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Victimize

  2B

  SorceryB

  Victimize puts Obsessive Collector onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Persist

  1B

  SorceryB

  Persist puts Obsessive Collector onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Tamiyo, Upriser Crowned

  4RW

  Legendary Creature — Moonfolk WarriorRW

  Both cards trigger on damage dealt — they fire together.
• Gix, Yawgmoth Praetor

  1BB

  Legendary Creature — Phyrexian PraetorB

  Both cards trigger on damage dealt — they fire together.
• Foot Chopper

  1B

  Artifact — EquipmentB

  Both cards trigger on damage dealt — they fire together.
• Ogre-Head Helm

  1R

  Artifact Creature — Equipment OgreR

  Both cards trigger on damage dealt — they fire together.
• Bruce Banner // The Incredible Hulk

  U2RRGG

  Legendary Creature — Human Scientist Hero // Legendary Creature — Gamma Berserker HeroGRU

  Bruce Banner grants an extra combat phase, enabling Obsessive Collector's combat-trigger payoff.
• Witch-king of Angmar

  3BB

  Legendary Creature — Wraith NobleB

  Both cards trigger on damage dealt — they fire together.
• Ascent of the Worthy

  1WB

  Enchantment — SagaBW

  Ascent of the Worthy puts Obsessive Collector onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Sword of Sinew and Steel

  3

  Artifact — EquipmentC

  Both cards trigger on damage dealt — they fire together.
• Sword of Hearth and Home

  3

  Artifact — EquipmentC

  Both cards trigger on damage dealt — they fire together.
• Soulstealer Axe

  1

  Artifact — EquipmentC

  Both cards trigger on damage dealt — they fire together.
• Sword of Wealth and Power

  3

  Artifact — EquipmentC

  Both cards trigger on damage dealt — they fire together.
• Necromancy

  2B

  EnchantmentB

  Necromancy puts Obsessive Collector onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Too Evil to Stay Dead

  2B

  SorceryB

  Too Evil to Stay Dead puts Obsessive Collector onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Roaming Throne

  4

  Artifact Creature — GolemC

  Roaming Throne makes Obsessive Collector's triggered ability trigger an additional time — each time it fires, you get it twice. Value, not a loop.
• Curiosity

  U

  Enchantment — AuraU

  Both cards trigger on damage dealt — they fire together.
• Dowsing Dagger // Lost Vale

  2

  Artifact — Equipment // LandC

  Both cards trigger on damage dealt — they fire together.