Confidence:StrongSolidPlausibleTentativeSpeculative

• Go-Shintai of Life's Origin

  3G

  Legendary Enchantment Creature — ShrineBGRUW

  Sacrifice-recursion with a catch: one card can return the other from the graveyard, but the return ability has an extra cost (sacrificing another creature, discarding a card, or tapping with no way to untap) the pair can't pay by itself. It works once — something else must keep supplying the fodder to make it repeatable.
• Dowsing Shaman

  4G

  Creature — Centaur ShamanG

  Sacrifice-recursion with a catch: one card can return the other from the graveyard, but the return ability has an extra cost (sacrificing another creature, discarding a card, or tapping with no way to untap) the pair can't pay by itself. It works once — something else must keep supplying the fodder to make it repeatable.
• Ghen, Arcanum Weaver

  RWB

  Legendary Creature — Human WizardBRW

  Sacrifice-recursion with a catch: one card can return the other from the graveyard, but the return ability has an extra cost (sacrificing another creature, discarding a card, or tapping with no way to untap) the pair can't pay by itself. It works once — something else must keep supplying the fodder to make it repeatable.
• Skull of Orm

  3

  ArtifactC

  Sacrifice-recursion with a catch: one card can return the other from the graveyard, but the return ability has an extra cost (sacrificing another creature, discarding a card, or tapping with no way to untap) the pair can't pay by itself. It works once — something else must keep supplying the fodder to make it repeatable.
• Rings of Brighthearth

  3

  ArtifactC

  Gaea's Touch has activated abilities that aren't mana abilities, fueling Rings of Brighthearth's activation-trigger.