Time Sieve
Tamiyo's Journal
Academy Manufactor
Mirror Image
1
Prerequisites
What do I need to start this combo?
| All permanents on the battlefield (Mirror Image as a copy of Academy Manufactor on the battlefield). |
Steps
How does this combo work?
1 | At the beginning of your upkeep, Tamiyo's Journal triggers, creating three Food, three Clue, and three Treasure tokens. |
2 | Activate Time Sieve by tapping it and sacrificing five artifacts, causing you to take an extra turn after this one. |
3 | Repeat each turn. |
Results
What do I get from this combo?
| Infinite turns |
Combo Metadata
10
DECKS
0.00%
OF 1429988 ELIGIBLE DECKS
Rank 17278
MOST PLAYED OF 29910 COMBOS
Top Commanders
Tivit, Seller of Secrets
0.02% of 12305 decks
3 decks
Atraxa, Praetors' Voice
0.01% of 35913 decks
2 decks
Lazav, Wearer of Faces
0.11% of 896 decks
1 decks
Cecily, Haunted Mage // Sophina, Spearsage Deserter
0.12% of 812 decks
1 decks
Bjorna, Nightfall Alchemist // Wernog, Rider's Chaplain
0.03% of 3267 decks
1 decks
Winter, Cursed Rider
0.25% of 402 decks
1 decks
Hidetsugu and Kairi
0.03% of 2989 decks
1 decks
High Synergy Cards
Phantasmal Image
60% of 10 decks
+57% synergy
Mirkwood Bats
60% of 10 decks
+50% synergy
Forensic Gadgeteer
50% of 8 decks
+48% synergy
Mechanized Production
50% of 10 decks
+47% synergy
Sakashima of a Thousand Faces
40% of 10 decks
+37% synergy
Rite of Replication
40% of 10 decks
+37% synergy
Vault of Whispers
40% of 10 decks
+36% synergy
Diabolic Tutor
40% of 10 decks
+34% synergy
Seat of the Synod
40% of 10 decks
+34% synergy
Spark Double
40% of 10 decks
+33% synergy
Top Cards
Counterspell
60% of 10 decks
+18% synergy
Swords to Plowshares
57% of 7 decks
-5% synergy
Arcane Denial
40% of 10 decks
+20% synergy
Negate
40% of 10 decks
+18% synergy
Game Changers
Expropriate
30% of 10 decks
+28% synergy
Drannith Magistrate
29% of 7 decks
+23% synergy
Enlightened Tutor
14% of 7 decks
-3% synergy
Gifts Ungiven
10% of 10 decks
+10% synergy
Narset, Parter of Veils
10% of 10 decks
+5% synergy
Thassa's Oracle
10% of 10 decks
+3% synergy
Ancient Tomb
10% of 10 decks
-0% synergy
Mystical Tutor
10% of 10 decks
-4% synergy
Vampiric Tutor
10% of 10 decks
-7% synergy
Demonic Tutor
10% of 10 decks
-11% synergy
Creatures
Kydele, Chosen of Kruphix
100% of 2 decks
+100% synergy
Overgrown Battlement
100% of 2 decks
+99% synergy
Lonis, Cryptozoologist
100% of 2 decks
+98% synergy
Elvish Archdruid
100% of 2 decks
+96% synergy
Reckless Fireweaver
100% of 2 decks
+96% synergy
Peregrin Took
100% of 2 decks
+96% synergy
Adrix and Nev, Twincasters
100% of 2 decks
+95% synergy
Kami of Whispered Hopes
100% of 2 decks
+93% synergy
Birds of Paradise
100% of 2 decks
+73% synergy
Civilized Scholar
50% of 2 decks
+50% synergy
Breya, Etherium Shaper
50% of 2 decks
+50% synergy
Gleaming Geardrake
50% of 2 decks
+49% synergy
Hedron Detonator
50% of 2 decks
+49% synergy
Sentinel Sarah Lyons
50% of 2 decks
+49% synergy
Malcolm, the Eyes
50% of 2 decks
+49% synergy
Hellkite Charger
50% of 2 decks
+48% synergy
Ingenious Artillerist
50% of 2 decks
+48% synergy
Crime Novelist
50% of 2 decks
+48% synergy
Jan Jansen, Chaos Crafter
50% of 2 decks
+47% synergy
Harmonic Prodigy
50% of 2 decks
+46% synergy
Isshin, Two Heavens as One
50% of 2 decks
+44% synergy
Professional Face-Breaker
50% of 2 decks
+42% synergy
Soulherder
43% of 7 decks
+38% synergy
Lotho, Corrupt Shirriff
43% of 7 decks
+30% synergy
Lavinia, Foil to Conspiracy
40% of 5 decks
+39% synergy
Kambal, Profiteering Mayor
40% of 5 decks
+34% synergy
Stridehangar Automaton
33% of 3 decks
+32% synergy
Marionette Apprentice
33% of 6 decks
+28% synergy
Shimmer Dragon
30% of 10 decks
+28% synergy
Disciple of the Vault
30% of 10 decks
+28% synergy
Glasspool Mimic
30% of 10 decks
+27% synergy
Flickerwisp
29% of 7 decks
+27% synergy
Rosie Cotton of South Lane
29% of 7 decks
+25% synergy
Brago, King Eternal
29% of 7 decks
+25% synergy
Mondrak, Glory Dominus
29% of 7 decks
+21% synergy
Tangletrove Kelp
25% of 8 decks
+24% synergy
Cybermen Squadron
22% of 9 decks
+21% synergy
Arcbound Ravager
20% of 10 decks
+20% synergy
Fblthp, the Lost
20% of 10 decks
+20% synergy
Soulless Jailer
20% of 10 decks
+19% synergy
Undercover Operative
20% of 10 decks
+19% synergy
Erdwal Illuminator
20% of 10 decks
+19% synergy
Vizier of Many Faces
20% of 10 decks
+19% synergy
Stunt Double
20% of 10 decks
+19% synergy
Teysa, Opulent Oligarch
20% of 5 decks
+19% synergy
Blightsteel Colossus
20% of 10 decks
+19% synergy
Deadeye Navigator
20% of 10 decks
+18% synergy
Cyberdrive Awakener
20% of 10 decks
+18% synergy
Walking Ballista
20% of 10 decks
+18% synergy
Marionette Master
20% of 10 decks
+17% synergy
Instants
Tear Asunder
50% of 2 decks
+44% synergy
Chaos Warp
50% of 2 decks
+19% synergy
Path to Exile
43% of 7 decks
-4% synergy
Eerie Interlude
29% of 7 decks
+25% synergy
Ephemerate
29% of 7 decks
+23% synergy
Dovin's Veto
29% of 7 decks
+11% synergy
Generous Gift
29% of 7 decks
+4% synergy
Jace's Ingenuity
20% of 10 decks
+20% synergy
Officious Interrogation
20% of 5 decks
+19% synergy
Cackling Counterpart
20% of 10 decks
+19% synergy
Experimental Augury
20% of 10 decks
+18% synergy
Blue Sun's Zenith
20% of 10 decks
+18% synergy
Whir of Invention
20% of 10 decks
+17% synergy
Drown in the Loch
20% of 10 decks
+14% synergy
Withering Torment
20% of 5 decks
+12% synergy
Brainstorm
20% of 10 decks
+0% synergy
An Offer You Can't Refuse
20% of 10 decks
-2% synergy
Orzhov Charm
14% of 7 decks
+14% synergy
Justiciar's Portal
14% of 7 decks
+14% synergy
Dromar's Charm
14% of 7 decks
+14% synergy
Fateful Absence
14% of 7 decks
+13% synergy
Slip On the Ring
14% of 7 decks
+13% synergy
Flicker of Fate
14% of 7 decks
+13% synergy
Lae'zel's Acrobatics
14% of 7 decks
+13% synergy
Esper Charm
14% of 7 decks
+13% synergy
Disorder in the Court
14% of 7 decks
+12% synergy
Semester's End
14% of 7 decks
+12% synergy
Momentary Blink
14% of 7 decks
+11% synergy
Cloudshift
14% of 7 decks
+11% synergy
Return to Dust
14% of 7 decks
+11% synergy
Dispatch
14% of 7 decks
+9% synergy
Utter End
14% of 7 decks
+8% synergy
Silence
14% of 7 decks
+8% synergy
Despark
14% of 7 decks
-1% synergy
Fleeting Reflection
12% of 8 decks
+12% synergy
Alchemist's Gift
10% of 10 decks
+10% synergy
Metallic Rebuke
10% of 10 decks
+10% synergy
Deadly Derision
10% of 10 decks
+10% synergy
Clutch of the Undercity
10% of 10 decks
+10% synergy
Stern Lesson
10% of 10 decks
+10% synergy
Time Stop
10% of 10 decks
+10% synergy
Demonic Gifts
10% of 10 decks
+10% synergy
Fated Infatuation
10% of 10 decks
+10% synergy
Illusion of Choice
10% of 10 decks
+10% synergy
Split Decision
10% of 10 decks
+9% synergy
Visions of Beyond
10% of 10 decks
+9% synergy
Perplex
10% of 10 decks
+9% synergy
Aetherspouts
10% of 10 decks
+9% synergy
Wash Away
10% of 10 decks
+9% synergy
Filter Out
10% of 10 decks
+8% synergy
Sorceries
Farseek
100% of 2 decks
+65% synergy
Cultivate
100% of 2 decks
+55% synergy
Reckless Handling
50% of 2 decks
+48% synergy
Ruinous Ultimatum
50% of 2 decks
+32% synergy
Farewell
43% of 7 decks
+30% synergy
Fabricate
30% of 10 decks
+24% synergy
White Sun's Twilight
29% of 7 decks
+26% synergy
Sevinne's Reclamation
29% of 7 decks
+21% synergy
Damn
29% of 7 decks
+12% synergy
Mnemonic Deluge
20% of 10 decks
+19% synergy
Quasiduplicate
20% of 10 decks
+19% synergy
Rise and Shine
20% of 10 decks
+19% synergy
Irenicus's Vile Duplication
20% of 10 decks
+17% synergy
Fragmentize
14% of 7 decks
+14% synergy
Gift of Estates
14% of 7 decks
+13% synergy
Council's Judgment
14% of 7 decks
+13% synergy
Tragic Arrogance
14% of 7 decks
+13% synergy
Dusk // Dawn
14% of 7 decks
+11% synergy
Merciless Eviction
14% of 7 decks
+10% synergy
Idyllic Tutor
14% of 7 decks
+10% synergy
Austere Command
14% of 7 decks
+2% synergy
Splitting the Powerstone
10% of 10 decks
+10% synergy
Cauldron's Gift
10% of 10 decks
+10% synergy
Rhystic Tutor
10% of 10 decks
+10% synergy
Worst Fears
10% of 10 decks
+10% synergy
Reverse Engineer
10% of 10 decks
+10% synergy
Time Reversal
10% of 10 decks
+9% synergy
Beacon of Tomorrows
10% of 10 decks
+9% synergy
Plea for Power
10% of 10 decks
+9% synergy
Languish
10% of 10 decks
+9% synergy
March of Progress
10% of 10 decks
+9% synergy
Temporal Manipulation
10% of 10 decks
+9% synergy
Traumatize
10% of 10 decks
+9% synergy
Time Stretch
10% of 10 decks
+9% synergy
Temporal Mastery
10% of 10 decks
+9% synergy
Personal Tutor
10% of 10 decks
+8% synergy
Blood Money
10% of 10 decks
+8% synergy
Time Warp
10% of 10 decks
+8% synergy
Profane Tutor
10% of 10 decks
+8% synergy
Unmarked Grave
10% of 10 decks
+8% synergy
In Garruk's Wake
10% of 10 decks
+7% synergy
Thoughtcast
10% of 10 decks
+7% synergy
Ringsight
10% of 10 decks
+6% synergy
Breach the Multiverse
10% of 10 decks
+6% synergy
Grim Tutor
10% of 10 decks
+6% synergy
Buried Alive
10% of 10 decks
+4% synergy
Exsanguinate
10% of 10 decks
+4% synergy
Ponder
10% of 10 decks
-2% synergy
Reanimate
10% of 10 decks
-7% synergy
Feed the Swarm
10% of 10 decks
-7% synergy
Utility Artifacts
Hoard Hauler
50% of 2 decks
+49% synergy
Oni-Cult Anvil
50% of 2 decks
+48% synergy
Thopter Fabricator
33% of 3 decks
+32% synergy
Krark-Clan Ironworks
30% of 10 decks
+29% synergy
Inspiring Statuary
30% of 10 decks
+28% synergy
Wayfarer's Bauble
30% of 10 decks
+21% synergy
Commander's Sphere
30% of 10 decks
+16% synergy
Nuka-Cola Vending Machine
25% of 8 decks
+24% synergy
Summoning Station
20% of 10 decks
+20% synergy
Omen Machine
20% of 10 decks
+20% synergy
Knowledge Pool
20% of 10 decks
+20% synergy
Myr Turbine
20% of 10 decks
+20% synergy
Mindslaver
20% of 10 decks
+20% synergy
Clock of Omens
20% of 10 decks
+19% synergy
Staff of Domination
20% of 10 decks
+18% synergy
Helm of the Host
20% of 10 decks
+17% synergy
Lightning Greaves
20% of 10 decks
-5% synergy
Thopter Foundry
14% of 7 decks
+12% synergy
Transmutation Font
12% of 8 decks
+12% synergy
Worldwalker Helm
12% of 8 decks
+11% synergy
Tarrian's Journal
12% of 8 decks
+11% synergy
Collector's Vault
11% of 9 decks
+10% synergy
Surveyor's Scope
10% of 10 decks
+10% synergy
Magnifying Glass
10% of 10 decks
+10% synergy
Mirror Gallery
10% of 10 decks
+10% synergy
Grindstone
10% of 10 decks
+10% synergy
Ugin's Nexus
10% of 10 decks
+10% synergy
Culling Dais
10% of 10 decks
+10% synergy
Tamiyo's Logbook
10% of 10 decks
+10% synergy
Treasure Chest
10% of 10 decks
+10% synergy
Thaumatic Compass
10% of 10 decks
+10% synergy
Treasure Map
10% of 10 decks
+9% synergy
Mirror Box
10% of 10 decks
+9% synergy
Key to the City
10% of 10 decks
+9% synergy
Mirage Mirror
10% of 10 decks
+9% synergy
Blade of Selves
10% of 10 decks
+9% synergy
Fireshrieker
10% of 10 decks
+8% synergy
Sword of Hearth and Home
10% of 10 decks
+8% synergy
Conjurer's Closet
10% of 10 decks
+8% synergy
Pearl Medallion
10% of 10 decks
+8% synergy
Sculpting Steel
10% of 10 decks
+8% synergy
Sapphire Medallion
10% of 10 decks
+7% synergy
Hedron Archive
10% of 10 decks
+7% synergy
Strionic Resonator
10% of 10 decks
+7% synergy
Jet Medallion
10% of 10 decks
+7% synergy
Panharmonicon
10% of 10 decks
+6% synergy
Idol of Oblivion
10% of 10 decks
+5% synergy
Sensei's Divining Top
10% of 10 decks
+5% synergy
Mind Stone
10% of 10 decks
-7% synergy
Swiftfoot Boots
10% of 10 decks
-17% synergy
Enchantments
Brokers Ascendancy
100% of 2 decks
+94% synergy
Breath of Fury
50% of 2 decks
+49% synergy
Ghirapur Aether Grid
50% of 2 decks
+49% synergy
Guild Artisan
50% of 2 decks
+49% synergy
Legion Loyalty
43% of 7 decks
+42% synergy
Teleportation Circle
43% of 7 decks
+39% synergy
Unstoppable Plan
33% of 3 decks
+31% synergy
Touch the Spirit Realm
29% of 7 decks
+26% synergy
Deafening Silence
29% of 7 decks
+26% synergy
Infinite Reflection
20% of 10 decks
+20% synergy
Shared Fate
20% of 10 decks
+20% synergy
Eye of the Storm
20% of 10 decks
+20% synergy
Arcane Laboratory
20% of 10 decks
+20% synergy
Jace's Erasure
20% of 10 decks
+20% synergy
Extravagant Replication
20% of 10 decks
+18% synergy
Intruder Alarm
20% of 10 decks
+18% synergy
Agent of the Iron Throne
20% of 10 decks
+18% synergy
Revel in Riches
20% of 10 decks
+17% synergy
Thopter Spy Network
20% of 10 decks
+17% synergy
Thorough Investigation
14% of 7 decks
+14% synergy
Far Traveler
14% of 7 decks
+13% synergy
Duelist's Heritage
14% of 7 decks
+12% synergy
Darksteel Mutation
14% of 7 decks
+9% synergy
Ghostly Prison
14% of 7 decks
+3% synergy
Eaten by Piranhas
12% of 8 decks
+11% synergy
Metamorphic Alteration
10% of 10 decks
+10% synergy
In Too Deep
10% of 10 decks
+10% synergy
The Antiquities War
10% of 10 decks
+10% synergy
Soothsaying
10% of 10 decks
+10% synergy
Followed Footsteps
10% of 10 decks
+10% synergy
Trail of Evidence
10% of 10 decks
+10% synergy
Teferi's Tutelage
10% of 10 decks
+9% synergy
Sphinx's Tutelage
10% of 10 decks
+9% synergy
Biotransference
10% of 10 decks
+9% synergy
Fraying Sanity
10% of 10 decks
+9% synergy
Efficient Construction
10% of 10 decks
+9% synergy
Witness Protection
10% of 10 decks
+8% synergy
Psychic Corrosion
10% of 10 decks
+8% synergy
Mirrormade
10% of 10 decks
+8% synergy
Imprisoned in the Moon
10% of 10 decks
+6% synergy
Aqueous Form
10% of 10 decks
+6% synergy
Teferi's Ageless Insight
10% of 10 decks
+5% synergy
Animate Dead
10% of 10 decks
+1% synergy
Black Market Connections
10% of 10 decks
-1% synergy
Propaganda
10% of 10 decks
-2% synergy
Planeswalkers
Tezzeret, Betrayer of Flesh
30% of 10 decks
+29% synergy
Tezzeret, Master of the Bridge
20% of 10 decks
+18% synergy
Dovin, Hand of Control
14% of 7 decks
+13% synergy
Sorin, Vengeful Bloodlord
14% of 7 decks
+12% synergy
Tezzeret the Schemer
10% of 10 decks
+10% synergy
Tezzeret, Artifice Master
10% of 10 decks
+9% synergy
Tezzeret the Seeker
10% of 10 decks
+8% synergy
Utility Lands
Great Furnace
50% of 2 decks
+45% synergy
Darksteel Citadel
30% of 10 decks
+26% synergy
Ancient Den
29% of 7 decks
+24% synergy
Havengul Laboratory
20% of 10 decks
+20% synergy
Leechridden Swamp
20% of 10 decks
+19% synergy
Castle Vantress
20% of 10 decks
+16% synergy
Reliquary Tower
20% of 10 decks
-10% synergy
Eiganjo, Seat of the Empire
14% of 7 decks
+6% synergy
Hidden Necropolis
12% of 8 decks
+12% synergy
Hidden Cataract
12% of 8 decks
+12% synergy
Dreadship Reef
10% of 10 decks
+9% synergy
Homeward Path
10% of 10 decks
+8% synergy
Inventors' Fair
10% of 10 decks
+6% synergy
Buried Ruin
10% of 10 decks
+5% synergy
War Room
10% of 10 decks
+4% synergy
Urza's Saga
10% of 10 decks
+3% synergy
Urborg, Tomb of Yawgmoth
10% of 10 decks
+1% synergy
Takenuma, Abandoned Mire
10% of 10 decks
+0% synergy
Otawara, Soaring City
10% of 10 decks
-6% synergy
Rogue's Passage
10% of 10 decks
-10% synergy
Bojuka Bog
10% of 10 decks
-20% synergy
Mana Artifacts
Talisman of Creativity
100% of 2 decks
+71% synergy
Arcane Signet
100% of 10 decks
+28% synergy
Sol Ring
100% of 10 decks
+16% synergy
Chromatic Lantern
50% of 10 decks
+41% synergy
Simic Signet
50% of 2 decks
+36% synergy
Talisman of Conviction
50% of 2 decks
+26% synergy
Talisman of Dominance
50% of 10 decks
+18% synergy
Dimir Signet
40% of 10 decks
+12% synergy
Replicating Ring
30% of 10 decks
+29% synergy
Thought Vessel
30% of 10 decks
+13% synergy
Talisman of Progress
29% of 7 decks
+4% synergy
Talisman of Hierarchy
29% of 7 decks
+3% synergy
Skyclave Relic
20% of 10 decks
+19% synergy
Fellwar Stone
20% of 10 decks
-1% synergy
Azorius Signet
14% of 7 decks
-11% synergy
Orzhov Signet
14% of 7 decks
-12% synergy
Intelligence Bobblehead
12% of 8 decks
+12% synergy
Strength Bobblehead
12% of 8 decks
+12% synergy
Perception Bobblehead
12% of 8 decks
+12% synergy
Charisma Bobblehead
12% of 8 decks
+12% synergy
Endurance Bobblehead
12% of 8 decks
+12% synergy
Agility Bobblehead
12% of 8 decks
+12% synergy
Luck Bobblehead
12% of 8 decks
+12% synergy
Empowered Autogenerator
10% of 10 decks
+10% synergy
Firemind Vessel
10% of 10 decks
+10% synergy
Darksteel Ingot
10% of 10 decks
+9% synergy
Machine God's Effigy
10% of 10 decks
+9% synergy
Springleaf Drum
10% of 10 decks
+8% synergy
Worn Powerstone
10% of 10 decks
+7% synergy
Basalt Monolith
10% of 10 decks
+7% synergy
Gilded Lotus
10% of 10 decks
+7% synergy
Everflowing Chalice
10% of 10 decks
+6% synergy
Sky Diamond
10% of 10 decks
+5% synergy
Lands
Selesnya Sanctuary
100% of 2 decks
+86% synergy
Sandsteppe Citadel
100% of 2 decks
+74% synergy
Seaside Citadel
100% of 2 decks
+74% synergy
Opulent Palace
100% of 2 decks
+72% synergy
Spara's Headquarters
100% of 2 decks
+71% synergy
Zagoth Triome
100% of 2 decks
+70% synergy
Indatha Triome
100% of 2 decks
+70% synergy
Hinterland Harbor
100% of 2 decks
+70% synergy
Temple Garden
100% of 2 decks
+61% synergy
Command Tower
100% of 10 decks
+26% synergy
Sulfurous Springs
50% of 2 decks
+29% synergy
Battlefield Forge
50% of 2 decks
+24% synergy
Shivan Reef
50% of 2 decks
+22% synergy
Clifftop Retreat
50% of 2 decks
+19% synergy
Dragonskull Summit
50% of 2 decks
+18% synergy
Sulfur Falls
50% of 2 decks
+18% synergy
Caves of Koilos
43% of 7 decks
+14% synergy
Hallowed Fountain
43% of 7 decks
+3% synergy
Dismal Backwater
40% of 10 decks
+33% synergy
Exotic Orchard
40% of 10 decks
+4% synergy
Marsh Flats
30% of 10 decks
+19% synergy
Choked Estuary
30% of 10 decks
+14% synergy
Dimir Aqueduct
30% of 10 decks
+14% synergy
Drowned Catacomb
30% of 10 decks
+3% synergy
Sunken Hollow
30% of 10 decks
-5% synergy
Sejiri Refuge
29% of 7 decks
+27% synergy
Scoured Barrens
29% of 7 decks
+19% synergy
Shattered Sanctum
29% of 7 decks
+15% synergy
Port Town
29% of 7 decks
+13% synergy
Sea of Clouds
29% of 7 decks
+3% synergy
Isolated Chapel
29% of 7 decks
-1% synergy
Prairie Stream
29% of 7 decks
-5% synergy
Spire of Industry
20% of 10 decks
+17% synergy
Mistvault Bridge
20% of 10 decks
+16% synergy
Gloomlake Verge
20% of 5 decks
+11% synergy
Darkwater Catacombs
20% of 10 decks
+5% synergy
Terramorphic Expanse
20% of 10 decks
+4% synergy
Temple of Deceit
20% of 10 decks
+4% synergy
Shipwreck Marsh
20% of 10 decks
+1% synergy
Underground River
20% of 10 decks
-1% synergy
Evolving Wilds
20% of 10 decks
-1% synergy
Morphic Pool
20% of 10 decks
-6% synergy
Watery Grave
20% of 10 decks
-20% synergy
Snowfield Sinkhole
14% of 7 decks
+12% synergy
Fetid Heath
14% of 7 decks
+3% synergy
Skycloud Expanse
14% of 7 decks
+1% synergy
Orzhov Basilica
14% of 7 decks
-2% synergy
Deserted Beach
14% of 7 decks
-2% synergy
Temple of Silence
14% of 7 decks
-4% synergy
Adarkar Wastes
14% of 7 decks
-6% synergy