Format legality is set when the card releases on Oct 2, 2026. It will be legal in Standard at release.
Confidence:StrongSolidPlausibleTentativeSpeculative
- Legendary Creature — Human Scientist Villain // Legendary Creature — Goblin Human VillainBRU
Undulating Witness has cycling, and Norman Osborn pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Legendary Creature — Skeleton RogueB
Undulating Witness has cycling, and Tinybones, Trinket Thief pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- 2BBEnchantmentB
Undulating Witness has cycling, and Midnight Oil pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Creature — Zombie WizardBU
Undulating Witness has cycling, and Lazotep Chancellor pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Legendary Creature — Human WizardB
Undulating Witness has cycling, and The Raven Man pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Legendary Creature — Vampire WarriorR
Undulating Witness has cycling, and Ivora, Insatiable Heir pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Legendary Creature — Goblin Human VillainB
Undulating Witness has cycling, and Green Goblin, Back for More pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Artifact Creature — ConstructC
Undulating Witness has cycling, and Containment Construct pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Legendary Creature — Human Doctor VillainB
Undulating Witness has cycling, and Moonstone, Harsh Mistress pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Creature — Human SoldierW
Undulating Witness has cycling, and Valiant Rescuer pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Creature — Jackal WarriorR
Undulating Witness has cycling, and Flameblade Adept pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Legendary Creature — Human WizardBU
Undulating Witness has cycling, and Oskar, Rubbish Reclaimer pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Creature — FoxW
Undulating Witness has cycling, and Flourishing Fox pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Legendary Creature — Insect VillainB
Undulating Witness has cycling, and Swarm, Being of Bees pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Legendary Creature — Skeleton DruidG
Undulating Witness has cycling, and Titanbones, Towering Heart pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- EnchantmentU
Undulating Witness has cycling, and Drake Haven pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Legendary Creature — Goblin Human VillainR
Undulating Witness has cycling, and Hobgoblin, Mantled Marauder pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Creature — Minotaur PirateR
Undulating Witness has cycling, and Glint-Horn Buccaneer pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- SorceryB
Undulating Witness has cycling, and Prison Break pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Creature — Elemental CatRW
Undulating Witness has cycling, and Savai Thundermane pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Creature — Human WizardR
Undulating Witness has cycling, and Drannith Stinger pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Legendary Creature — Human ShamanR
Undulating Witness has cycling, and Brallin, Skyshark Rider pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Creature — Human ArcherB
Undulating Witness has cycling, and Ruthless Sniper pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Enchantment — ClassR
Undulating Witness has cycling, and Cool but Rude pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Creature — Human ClericBU
Undulating Witness has cycling, and Shadowstorm Vizier pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
MTG Arena only
Synergies with cards played only on MTG Arena (including Arena rebalances). They aren't available in paper Magic.
Confidence:StrongSolidPlausibleTentativeSpeculative
- Creature — Human SoldierW
Undulating Witness has cycling, and Benalish Partisan pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
- Legendary Creature — Djinn NobleU
Undulating Witness has cycling, and Calim, Djinn Emperor pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
Free Borg Revolutionaries3WWArtifact Creature — Borg RebelW
Kree Sentinel4RArtifact Creature — Kree Robot VillainR
Roxxon Brutes4BCreature — Human Berserker VillainB
Humpback Whales4UUCreature — WhaleU
Retrieval Agent3UCreature — Human SoldierU
Cold-Blooded Crew4GGCreature — Gorn WarriorG
Lunar Hatchling4GUCreature — Alien BeastGU
Scion of Glaciers2UUCreature — ElementalU
Savage Land Dinosaur4GGCreature — DinosaurG
Horta4RRCreature — ElementalR
Shardless Outlander7Artifact Creature — Construct ScoutC
Talonrend4UCreature — ElementalRU