Royal Assassin + Urabrask the Hidden + Intruder Alarm

Royal Assassin
Urabrask the Hidden
Intruder Alarm

Requires
Royal Assassin must be on the battlefield. Urabrask the Hidden must be on the battlefield. Intruder Alarm must be on the battlefield.
Steps
  1. Whenever a creature enters the battlefield under an opponent's control, it enters tapped due to Urabrask and triggers Intruder Alarm.
  2. Holding priority, activate Royal Assassin by tapping it, destroying the creature.
  3. Resolve the Intruder Alarm trigger, untapping all creatures.
  4. Repeat.
Results
Destroy all creatures that enter the battlefield under an opponent's control.

Tazri, Stalwart Survivor
0.05% of 1861 decks 1 decks
Creatures
Aerie Mystics
100% of 1 decks +100% synergy
Brigid, Hero of Kinsbaile
100% of 1 decks +100% synergy
Deepfire Elemental
100% of 1 decks +100% synergy
Kydele, Chosen of Kruphix
100% of 1 decks +100% synergy
Nullmage Advocate
100% of 1 decks +100% synergy
Robaran Mercenaries
100% of 1 decks +100% synergy
Vona, Butcher of Magan
100% of 1 decks +100% synergy
Rubinia Soulsinger
100% of 1 decks +100% synergy
Experiment Kraj
100% of 1 decks +100% synergy
Loyal Retainers
100% of 1 decks +100% synergy
Ertha Jo, Frontier Mentor
100% of 1 decks +100% synergy
Kamahl, Heart of Krosa
100% of 1 decks +100% synergy
Avatar of Woe
100% of 1 decks +100% synergy
Spectral Sailor
100% of 1 decks +100% synergy
Dark Impostor
100% of 1 decks +100% synergy
Orthion, Hero of Lavabrink
100% of 1 decks +100% synergy
Jazal Goldmane
100% of 1 decks +100% synergy
Beastcaller Savant
100% of 1 decks +99% synergy
Svella, Ice Shaper
100% of 1 decks +99% synergy
Humble Defector
100% of 1 decks +99% synergy
Thrasios, Triton Hero
100% of 1 decks +99% synergy
Mother of Runes
100% of 1 decks +99% synergy
Ilysian Caryatid
100% of 1 decks +99% synergy
Paradise Druid
100% of 1 decks +99% synergy
Dynaheir, Invoker Adept
100% of 1 decks +99% synergy
Ioreth of the Healing House
100% of 1 decks +98% synergy
Kiora's Follower
100% of 1 decks +98% synergy
Selvala, Explorer Returned
100% of 1 decks +98% synergy
Skrelv, Defector Mite
100% of 1 decks +98% synergy
Drana and Linvala
100% of 1 decks +98% synergy
Najeela, the Blade-Blossom
100% of 1 decks +97% synergy
Avacyn's Pilgrim
100% of 1 decks +97% synergy
Zirda, the Dawnwaker
100% of 1 decks +97% synergy
Samut, Voice of Dissent
100% of 1 decks +97% synergy
Kenrith, the Returned King
100% of 1 decks +96% synergy
Inga and Esika
100% of 1 decks +94% synergy
Faeburrow Elder
100% of 1 decks +79% synergy
Instants
Dissipate
100% of 1 decks +100% synergy
Tamiyo's Safekeeping
100% of 1 decks +99% synergy
Sylvan Reclamation
100% of 1 decks +99% synergy
Stroke of Midnight
100% of 1 decks +97% synergy
Chaos Warp
100% of 1 decks +94% synergy
Arcane Denial
100% of 1 decks +94% synergy
Counterspell
100% of 1 decks +79% synergy
Path to Exile
100% of 1 decks +75% synergy
Swords to Plowshares
100% of 1 decks +59% synergy
Sorceries
Fractured Identity
100% of 1 decks +99% synergy
Utility Artifacts
Thousand-Year Elixir
100% of 1 decks +99% synergy
Rings of Brighthearth
100% of 1 decks +98% synergy
Swiftfoot Boots
100% of 1 decks +87% synergy
Enchantments
Trace of Abundance
100% of 1 decks +98% synergy
Rising of the Day
100% of 1 decks +97% synergy
Training Grounds
100% of 1 decks +95% synergy
Temur Ascendancy
100% of 1 decks +90% synergy
Rhythm of the Wild
100% of 1 decks +89% synergy
Mystic Remora
100% of 1 decks +88% synergy
Planeswalkers
Wrenn and Realmbreaker
100% of 1 decks +96% synergy
Mana Artifacts
Darksteel Ingot
100% of 1 decks +96% synergy
Commander's Sphere
100% of 1 decks +80% synergy
Chromatic Lantern
100% of 1 decks +47% synergy
Arcane Signet
100% of 1 decks +26% synergy
Sol Ring
100% of 1 decks +22% synergy
Lands
Rupture Spire
100% of 1 decks +98% synergy
Thriving Isle
100% of 1 decks +98% synergy
Ash Barrens
100% of 1 decks +94% synergy
Spire Garden
100% of 1 decks +93% synergy
Bountiful Promenade
100% of 1 decks +92% synergy
Rejuvenating Springs
100% of 1 decks +92% synergy
Savage Lands
100% of 1 decks +87% synergy
Mystic Monastery
100% of 1 decks +85% synergy
Sandsteppe Citadel
100% of 1 decks +84% synergy
Terramorphic Expanse
100% of 1 decks +83% synergy
Jungle Shrine
100% of 1 decks +82% synergy
Mana Confluence
100% of 1 decks +80% synergy
City of Brass
100% of 1 decks +80% synergy
Evolving Wilds
100% of 1 decks +78% synergy
Jetmir's Garden
100% of 1 decks +76% synergy
Spara's Headquarters
100% of 1 decks +76% synergy
Indatha Triome
100% of 1 decks +75% synergy
Temple Garden
100% of 1 decks +70% synergy
Path of Ancestry
100% of 1 decks +60% synergy
Command Tower
100% of 1 decks +12% synergy