Replication Technique + Parallel Lives
Replication Technique
Parallel Lives
Requires
Replication Technique must be in hand.
Parallel Lives must be on the battlefield.
You have a way to create a creature token.
Mana needed: 
Steps
- Cast Replication Technique by paying , targeting Parallel Lives.
- Replication Technique's demonstrate ability triggers, causing you to copy it, with the copy targeting Parallel Lives.
- Resolve the copy of Replcation Technique, creating two token copies of Parallel Lives.
- Resolve the original Replication Technique, creating eight token copies of Parallel Lives.
- Create a creature token, causing you to instead create 2,048 creature tokens.
Results
Near-infinite creature tokens. Near-infinite ETB.
Adrix and Nev, Twincasters
21.19% of 6707 decks
1421 decks
Esix, Fractal Bloom
7.23% of 3223 decks
233 decks
Koma, Cosmos Serpent
2.07% of 5457 decks
113 decks
Ivy, Gleeful Spellthief
0.62% of 6744 decks
42 decks
Riku of Two Reflections
0.84% of 4877 decks
41 decks
Brenard, Ginger Sculptor
0.32% of 7821 decks
25 decks
Miirym, Sentinel Wyrm
0.11% of 21084 decks
23 decks
Xavier Sal, Infested Captain
0.47% of 4715 decks
22 decks
Volo, Guide to Monsters
0.26% of 7597 decks
20 decks
The Goose Mother
0.68% of 2208 decks
15 decks
Garth One-Eye
0.32% of 4113 decks
13 decks
Gimbal, Gremlin Prodigy
0.45% of 2872 decks
13 decks
Esika, God of the Tree
0.06% of 18169 decks
11 decks
Tom Bombadil
0.08% of 14137 decks
11 decks
Galadriel, Light of Valinor
0.13% of 8399 decks
11 decks
Kenrith, the Returned King
0.05% of 21799 decks
11 decks
Go-Shintai of Life's Origin
0.07% of 15054 decks
10 decks
Rashmi and Ragavan
0.19% of 5303 decks
10 decks
New Cards
Koma, World-Eater
72% of 95 decks
+55% synergy
Blasphemous Edict
60% of 5 decks
+26% synergy
Kiora, the Rising Tide
52% of 29 decks
+40% synergy
Enduring Vitality
42% of 154 decks
+21% synergy
Loot, Exuberant Explorer
38% of 29 decks
+11% synergy
High Synergy Cards
Rite of Replication
78% of 2450 decks
+75% synergy
Anointed Procession
76% of 295 decks
+67% synergy
Doubling Season
67% of 2450 decks
+58% synergy
Curiosity Crafter
57% of 2450 decks
+55% synergy
Second Harvest
60% of 2450 decks
+55% synergy
Perplexing Test
55% of 2450 decks
+53% synergy
Esix, Fractal Bloom
54% of 2450 decks
+52% synergy
Theoretical Duplication
52% of 2450 decks
+52% synergy
Mondrak, Glory Dominus
59% of 274 decks
+50% synergy
Mythos of Illuna
51% of 255 decks
+49% synergy
Top Cards
Beast Within
64% of 2450 decks
+25% synergy
Kodama's Reach
61% of 2450 decks
+29% synergy
Cultivate
57% of 2450 decks
+11% synergy
Scute Swarm
57% of 2450 decks
+47% synergy
Rampant Growth
57% of 2450 decks
+22% synergy
Avenger of Zendikar
53% of 2450 decks
+43% synergy
Caretaker's Talent
52% of 58 decks
+40% synergy
Ezuri's Predation
52% of 2450 decks
+48% synergy
Irenicus's Vile Duplication
50% of 2282 decks
+47% synergy
Double Major
50% of 2450 decks
+46% synergy
Creatures
Hornet Queen
50% of 2450 decks
+47% synergy
Ojer Taq, Deepest Foundation
48% of 181 decks
+42% synergy
Progenitor Mimic
48% of 2450 decks
+45% synergy
Tireless Provisioner
46% of 2412 decks
+35% synergy
Koma, Cosmos Serpent
46% of 2450 decks
+41% synergy
Octomancer
46% of 340 decks
+40% synergy
Rampaging Baloths
44% of 2450 decks
+37% synergy
Reef Worm
44% of 2450 decks
+43% synergy
Biovisionary
40% of 2450 decks
+39% synergy
Sakashima of a Thousand Faces
39% of 2450 decks
+36% synergy
Jaheira, Friend of the Forest
38% of 2282 decks
+32% synergy
Coiling Oracle
36% of 2450 decks
+28% synergy
Spark Double
34% of 2450 decks
+27% synergy
Gruff Triplets
33% of 1442 decks
+31% synergy
Brudiclad, Telchor Engineer
33% of 255 decks
+29% synergy
Eternal Witness
32% of 2450 decks
+12% synergy
Sakura-Tribe Elder
32% of 2450 decks
+14% synergy
Junk Winder
32% of 2412 decks
+29% synergy
Adrix and Nev, Twincasters
31% of 2450 decks
+26% synergy
Tendershoot Dryad
31% of 2450 decks
+28% synergy
Springheart Nantuko
30% of 584 decks
+23% synergy
Ghired, Mirror of the Wilds
27% of 59 decks
+25% synergy
Birds of Paradise
26% of 2450 decks
-1% synergy
Rhys the Redeemed
25% of 295 decks
+22% synergy
Peregrin Took
25% of 1603 decks
+19% synergy
Master Biomancer
23% of 2450 decks
+20% synergy
Kambal, Profiteering Mayor
23% of 53 decks
+13% synergy
Ondu Spiritdancer
22% of 224 decks
+19% synergy
Nesting Dovehawk
22% of 238 decks
+20% synergy
Yenna, Redtooth Regent
21% of 214 decks
+17% synergy
Craterhoof Behemoth
20% of 2450 decks
+14% synergy
Hydra Broodmaster
19% of 2450 decks
+18% synergy
Incubation Druid
19% of 2450 decks
+14% synergy
Chatterfang, Squirrel General
18% of 187 decks
+13% synergy
Ocelot Pride
18% of 90 decks
+12% synergy
Trygon Predator
18% of 2450 decks
+15% synergy
Biowaste Blob
17% of 2450 decks
+17% synergy
Trostani, Selesnya's Voice
17% of 295 decks
+15% synergy
Arasta of the Endless Web
17% of 2450 decks
+14% synergy
Deekah, Fractal Theorist
16% of 2450 decks
+16% synergy
Terror of the Peaks
16% of 255 decks
+11% synergy
Bramble Sovereign
16% of 2450 decks
+15% synergy
Kazandu Tuskcaller
16% of 2450 decks
+16% synergy
Llanowar Elves
16% of 2450 decks
-5% synergy
Gremlin Tamer
16% of 19 decks
+9% synergy
Noble Hierarch
16% of 295 decks
-1% synergy
Guardian Augmenter
15% of 2450 decks
+14% synergy
Calix, Guided by Fate
15% of 233 decks
+12% synergy
Enduring Curiosity
15% of 202 decks
+6% synergy
Quandrix Cultivator
15% of 2450 decks
+15% synergy
Instants
Rapid Hybridization
50% of 2450 decks
+41% synergy
Counterspell
50% of 2450 decks
+7% synergy
Heroic Intervention
41% of 2450 decks
+12% synergy
Cackling Counterpart
40% of 2450 decks
+38% synergy
Krosan Grip
37% of 2450 decks
+30% synergy
See Double
36% of 1819 decks
+33% synergy
Growth Spiral
35% of 2450 decks
+14% synergy
Return of the Wildspeaker
31% of 2450 decks
+18% synergy
Swords to Plowshares
31% of 295 decks
-32% synergy
Cyclonic Rift
30% of 2450 decks
+2% synergy
Mystic Reflection
29% of 2450 decks
+28% synergy
Teferi's Protection
26% of 295 decks
+6% synergy
Three Steps Ahead
25% of 708 decks
+21% synergy
Enlightened Tutor
24% of 295 decks
+6% synergy
Path to Exile
24% of 295 decks
-22% synergy
Pongify
22% of 2450 decks
+10% synergy
Sundering Growth
20% of 295 decks
+16% synergy
Vampiric Tutor
19% of 187 decks
+1% synergy
Worldly Tutor
19% of 2450 decks
+5% synergy
Mana Drain
18% of 2450 decks
+3% synergy
Negate
17% of 2450 decks
-6% synergy
Assassin's Trophy
17% of 187 decks
-13% synergy
Chaos Warp
16% of 255 decks
-16% synergy
Fierce Guardianship
16% of 2450 decks
-2% synergy
Arcane Denial
16% of 2450 decks
-4% synergy
Eureka Moment
16% of 2450 decks
+12% synergy
Rootborn Defenses
15% of 295 decks
+12% synergy
Fell the Profane
14% of 70 decks
+3% synergy
Generous Gift
13% of 295 decks
-13% synergy
Mystical Tutor
13% of 2450 decks
-2% synergy
An Offer You Can't Refuse
13% of 2317 decks
-8% synergy
Eladamri's Call
12% of 295 decks
+0% synergy
Sublime Epiphany
12% of 2450 decks
+10% synergy
Swan Song
11% of 2450 decks
-6% synergy
Clever Concealment
11% of 264 decks
+6% synergy
Elminster's Simulacrum
11% of 2282 decks
+10% synergy
Planar Genesis
10% of 584 decks
+3% synergy
Arachnogenesis
10% of 2450 decks
+8% synergy
Incubation // Incongruity
9% of 2450 decks
+9% synergy
Sink into Stupor
9% of 609 decks
-4% synergy
Biomass Mutation
9% of 2450 decks
+7% synergy
Deflecting Swat
9% of 255 decks
-8% synergy
Saw in Half
9% of 176 decks
+5% synergy
Dovin's Veto
8% of 295 decks
-11% synergy
Spell Swindle
8% of 2450 decks
+7% synergy
Brainstorm
8% of 2450 decks
-13% synergy
March of the Multitudes
8% of 295 decks
+4% synergy
Big Score
8% of 248 decks
-2% synergy
Dawn's Truce
8% of 66 decks
-8% synergy
Fated Infatuation
8% of 2450 decks
+7% synergy
Sorceries
Doppelgang
46% of 984 decks
+42% synergy
Quasiduplicate
44% of 2450 decks
+43% synergy
Shamanic Revelation
43% of 2450 decks
+34% synergy
For the Common Good
43% of 402 decks
+39% synergy
Rootcast Apprenticeship
40% of 265 decks
+34% synergy
Three Visits
36% of 2450 decks
+11% synergy
Nature's Lore
36% of 2450 decks
+4% synergy
Quantum Misalignment
35% of 1247 decks
+33% synergy
Awaken the Woods
33% of 2120 decks
+29% synergy
Aggressive Biomancy
32% of 549 decks
+28% synergy
Farseek
29% of 2450 decks
-5% synergy
Demonic Tutor
29% of 187 decks
+7% synergy
Curse of the Swine
28% of 2450 decks
+23% synergy
Rally the Galadhrim
27% of 1279 decks
+26% synergy
Season of Weaving
26% of 445 decks
+23% synergy
Coiling Rebirth
26% of 39 decks
+23% synergy
Oversimplify
24% of 2450 decks
+23% synergy
Spitting Image
23% of 2450 decks
+22% synergy
Croaking Counterpart
21% of 2367 decks
+19% synergy
Blasphemous Act
19% of 255 decks
-14% synergy
Repudiate // Replicate
19% of 2450 decks
+18% synergy
Hour of Reckoning
14% of 295 decks
+10% synergy
Idyllic Tutor
14% of 295 decks
+9% synergy
Clone Legion
14% of 2450 decks
+12% synergy
Fractured Identity
13% of 295 decks
+12% synergy
Preposterous Proportions
13% of 47 decks
+6% synergy
Body of Research
12% of 2450 decks
+11% synergy
Bala Ged Recovery
11% of 2450 decks
+2% synergy
Jeska's Will
11% of 255 decks
-7% synergy
Pest Infestation
11% of 2450 decks
+9% synergy
Golden Ratio
10% of 2450 decks
+10% synergy
Mirage Mockery
10% of 1888 decks
+10% synergy
Skyshroud Claim
10% of 2450 decks
+1% synergy
Stolen Identity
10% of 2450 decks
+9% synergy
Grim Tutor
10% of 187 decks
+5% synergy
Farewell
9% of 295 decks
-4% synergy
Diabolic Tutor
9% of 187 decks
+3% synergy
Molten Duplication
9% of 92 decks
+6% synergy
Eerie Ultimatum
8% of 123 decks
-4% synergy
Diabolic Intent
7% of 187 decks
-1% synergy
Finale of Devastation
7% of 2450 decks
-1% synergy
Saheeli's Artistry
7% of 2450 decks
+7% synergy
Green Sun's Zenith
7% of 2450 decks
+1% synergy
Genesis Ultimatum
7% of 255 decks
+1% synergy
Nissa's Expedition
7% of 2450 decks
+7% synergy
Toxic Deluge
7% of 187 decks
-11% synergy
Explore
6% of 2450 decks
-3% synergy
Austere Command
6% of 295 decks
-7% synergy
Profane Tutor
6% of 187 decks
+3% synergy
Twinflame
6% of 255 decks
+3% synergy
Utility Artifacts
Helm of the Host
49% of 2450 decks
+46% synergy
Idol of Oblivion
45% of 2450 decks
+40% synergy
Combine Chrysalis
39% of 2412 decks
+38% synergy
Mirror Box
39% of 2345 decks
+38% synergy
Fishing Pole
31% of 29 decks
+30% synergy
Bootleggers' Stash
25% of 2317 decks
+23% synergy
Esika's Chariot
25% of 2450 decks
+23% synergy
Lightning Greaves
15% of 2450 decks
-10% synergy
Banner of Kinship
15% of 47 decks
+3% synergy
Swiftfoot Boots
13% of 2450 decks
-15% synergy
Mimic Vat
12% of 2450 decks
+11% synergy
Panharmonicon
8% of 2450 decks
+4% synergy
Nuka-Cola Vending Machine
8% of 1136 decks
+6% synergy
Sequence Engine
7% of 2450 decks
+7% synergy
Lithoform Engine
7% of 2450 decks
+6% synergy
Halo Fountain
7% of 294 decks
+4% synergy
Skullclamp
7% of 2450 decks
-6% synergy
Fractal Harness
6% of 2450 decks
+5% synergy
Geometric Nexus
6% of 2450 decks
+6% synergy
Blade of Selves
5% of 2450 decks
+4% synergy
Enchantments
Extravagant Replication
38% of 2317 decks
+37% synergy
Smothering Tithe
36% of 295 decks
+11% synergy
Rhystic Study
33% of 2450 decks
+6% synergy
Mirror Room // Fractured Realm
31% of 202 decks
+26% synergy
Paradox Zone
30% of 2450 decks
+29% synergy
Primal Vigor
27% of 2450 decks
+24% synergy
City of Death
27% of 1494 decks
+25% synergy
Three Blind Mice
21% of 219 decks
+20% synergy
Awakening Zone
21% of 2450 decks
+18% synergy
Growing Ranks
19% of 295 decks
+16% synergy
Song of the Worldsoul
17% of 295 decks
+16% synergy
Vesuvan Duplimancy
16% of 2207 decks
+15% synergy
Mirari's Wake
15% of 295 decks
+1% synergy
Tribute to the World Tree
15% of 1819 decks
+7% synergy
Mystic Remora
14% of 2450 decks
-4% synergy
Fable of the Mirror-Breaker
13% of 252 decks
+11% synergy
Aura Shards
13% of 295 decks
+4% synergy
Growing Rites of Itlimoc
13% of 2450 decks
+7% synergy
Temur Ascendancy
12% of 255 decks
-2% synergy
Court of Vantress
12% of 1377 decks
+10% synergy
Leyline of the Guildpact
12% of 50 decks
-11% synergy
Cryptolith Rite
12% of 2450 decks
+8% synergy
Sylvan Library
11% of 2450 decks
-1% synergy
Sterling Grove
11% of 295 decks
+3% synergy
In the Darkness Bind Them
10% of 71 decks
+4% synergy
Assemble the Legion
10% of 122 decks
+6% synergy
Walk-In Closet // Forgotten Cellar
10% of 115 decks
-5% synergy
The Kami War
9% of 98 decks
+2% synergy
Trouble in Pairs
9% of 131 decks
+2% synergy
Intangible Virtue
9% of 295 decks
+4% synergy
Battle for Bretagard
8% of 295 decks
+7% synergy
Followed Footsteps
8% of 2450 decks
+8% synergy
Elemental Bond
8% of 2450 decks
+3% synergy
Sanctum of All
8% of 98 decks
+3% synergy
Black Market Connections
8% of 185 decks
-3% synergy
Curse of Opulence
8% of 255 decks
+4% synergy
Impact Tremors
8% of 255 decks
-2% synergy
Privileged Position
8% of 295 decks
+4% synergy
Beastmaster Ascension
8% of 2450 decks
+2% synergy
Fisher's Talent
8% of 340 decks
+5% synergy
Binding the Old Gods
7% of 187 decks
+2% synergy
There and Back Again
7% of 177 decks
+5% synergy
Garruk's Uprising
7% of 2450 decks
-8% synergy
Bitterblossom
7% of 187 decks
+3% synergy
The Meathook Massacre
7% of 187 decks
+2% synergy
Endless Evil
7% of 2282 decks
+6% synergy
Firja's Retribution
7% of 123 decks
+5% synergy
Sylvan Scavenging
6% of 47 decks
+3% synergy
Storm the Vault
6% of 255 decks
+3% synergy
Genesis of the Daleks
6% of 116 decks
+5% synergy
Battles
Invasion of Alara
6% of 72 decks
+2% synergy
Planeswalkers
Garruk, Primal Hunter
37% of 2450 decks
+34% synergy
Oko, the Ringleader
16% of 791 decks
+15% synergy
Kaya, Geist Hunter
15% of 123 decks
+13% synergy
Oko, Thief of Crowns
12% of 2450 decks
+6% synergy
Nissa, Ascended Animist
10% of 1948 decks
+8% synergy
Elspeth, Sun's Champion
7% of 295 decks
+2% synergy
Saheeli, Sublime Artificer
6% of 255 decks
+1% synergy
Tamiyo, Compleated Sage
6% of 2345 decks
+4% synergy
Utility Lands
Reliquary Tower
45% of 2450 decks
+16% synergy
Mosswort Bridge
39% of 2450 decks
+29% synergy
Rogue's Passage
28% of 2450 decks
+9% synergy
Oran-Rief, the Vastwood
25% of 2450 decks
+20% synergy
Yavimaya, Cradle of Growth
24% of 2412 decks
+14% synergy
Temple of the False God
22% of 2450 decks
+13% synergy
Novijen, Heart of Progress
22% of 2450 decks
+21% synergy
Lumbering Falls
22% of 2450 decks
+20% synergy
Boseiju, Who Endures
22% of 2345 decks
+2% synergy
Otawara, Soaring City
16% of 2345 decks
-1% synergy
Fountainport
16% of 357 decks
+12% synergy
Bojuka Bog
16% of 187 decks
-15% synergy
Hall of Heliod's Generosity
13% of 295 decks
+6% synergy
Alchemist's Refuge
12% of 2450 decks
+6% synergy
Field of the Dead
12% of 2450 decks
+9% synergy
Lonely Sandbar
11% of 2450 decks
+7% synergy
Tranquil Thicket
10% of 2450 decks
+7% synergy
Mystic Sanctuary
9% of 2450 decks
-3% synergy
Gaea's Cradle
9% of 2450 decks
+3% synergy
Treasure Vault
9% of 2378 decks
+6% synergy
Khalni Garden
9% of 2450 decks
+7% synergy
Llanowar Reborn
9% of 2450 decks
+7% synergy
The Shire
9% of 1824 decks
+4% synergy
Ancient Tomb
8% of 2450 decks
-2% synergy
Shifting Woodland
8% of 609 decks
-1% synergy
Three Tree City
8% of 445 decks
-2% synergy
Mirrorpool
7% of 2450 decks
+6% synergy
Gavony Township
7% of 295 decks
-3% synergy
Great Furnace
6% of 255 decks
+1% synergy
Cabal Coffers
6% of 187 decks
-5% synergy
Castle Garenbrig
6% of 2450 decks
+1% synergy
Serra's Sanctum
5% of 295 decks
+4% synergy
Restless Vinestalk
5% of 1377 decks
+2% synergy
Urza's Saga
5% of 2412 decks
-2% synergy
Command Beacon
5% of 2450 decks
+0% synergy
Mana Artifacts
Sol Ring
88% of 2450 decks
+4% synergy
Arcane Signet
78% of 2450 decks
+5% synergy
Simic Signet
45% of 2450 decks
+31% synergy
Skyclave Relic
18% of 2450 decks
+16% synergy
Talisman of Curiosity
17% of 2450 decks
+5% synergy
Izzet Signet
13% of 255 decks
-15% synergy
Thought Vessel
13% of 2450 decks
-4% synergy
Gruul Signet
11% of 255 decks
-1% synergy
Talisman of Creativity
10% of 255 decks
-19% synergy
Replicating Ring
9% of 2450 decks
+7% synergy
Azorius Signet
9% of 295 decks
-17% synergy
Cursed Mirror
9% of 255 decks
+3% synergy
Talisman of Impulse
9% of 255 decks
-0% synergy
Selesnya Signet
8% of 295 decks
-0% synergy
Talisman of Progress
7% of 295 decks
-16% synergy
Mana Crypt
6% of 2450 decks
-2% synergy
Timeless Lotus
6% of 96 decks
-8% synergy
Talisman of Unity
6% of 295 decks
-1% synergy
Fellwar Stone
6% of 2450 decks
-15% synergy
Chromatic Lantern
6% of 2450 decks
-4% synergy
Golgari Signet
5% of 187 decks
-7% synergy
Commander's Sphere
5% of 2450 decks
-10% synergy
Lands
Command Tower
91% of 2450 decks
+17% synergy
Spara's Headquarters
61% of 294 decks
+29% synergy
Yavimaya Coast
59% of 2450 decks
+33% synergy
Breeding Pool
59% of 2450 decks
+18% synergy
Rejuvenating Springs
56% of 2450 decks
+27% synergy
Simic Growth Chamber
55% of 2450 decks
+35% synergy
Ketria Triome
55% of 255 decks
+22% synergy
Hinterland Harbor
54% of 2450 decks
+27% synergy
Stomping Ground
53% of 255 decks
+12% synergy
Hallowed Fountain
52% of 295 decks
+11% synergy
Temple Garden
52% of 295 decks
+11% synergy
Exotic Orchard
51% of 2450 decks
+16% synergy
Overgrown Tomb
50% of 187 decks
+8% synergy
Indatha Triome
49% of 123 decks
+18% synergy
Zagoth Triome
49% of 187 decks
+18% synergy
Dreamroot Cascade
48% of 2357 decks
+30% synergy
Jetmir's Garden
48% of 121 decks
+15% synergy
Steam Vents
45% of 255 decks
+6% synergy
Temple of Mystery
43% of 2450 decks
+26% synergy
Watery Grave
43% of 187 decks
+3% synergy
Raugrin Triome
41% of 122 decks
+14% synergy
The World Tree
40% of 98 decks
+6% synergy
Myriad Landscape
37% of 2450 decks
+17% synergy
Raffine's Tower
36% of 122 decks
+8% synergy
Ziatora's Proving Ground
36% of 100 decks
+4% synergy
Misty Rainforest
35% of 2450 decks
+24% synergy
Bountiful Promenade
33% of 295 decks
+9% synergy
Savai Triome
33% of 98 decks
+6% synergy
Sea of Clouds
31% of 295 decks
+5% synergy
Godless Shrine
30% of 123 decks
-11% synergy
Flooded Grove
30% of 2450 decks
+17% synergy
Xander's Lounge
29% of 100 decks
+2% synergy
Barkchannel Pathway
27% of 2450 decks
+18% synergy
Vineglimmer Snarl
26% of 2450 decks
+16% synergy
Blighted Woodland
26% of 2450 decks
+20% synergy
Sacred Foundry
25% of 122 decks
-11% synergy
Frontier Bivouac
24% of 255 decks
-3% synergy
Hedge Maze
24% of 1001 decks
+10% synergy
Canopy Vista
23% of 295 decks
-13% synergy
Spire Garden
23% of 255 decks
-1% synergy
Seaside Citadel
22% of 295 decks
-4% synergy
Training Center
22% of 255 decks
-5% synergy
Littjara Mirrorlake
21% of 2450 decks
+19% synergy
Bayou
21% of 187 decks
+7% synergy
Underground Sea
21% of 187 decks
+7% synergy
Savannah
20% of 295 decks
+7% synergy
Tundra
20% of 295 decks
+6% synergy
Morphic Pool
20% of 187 decks
-6% synergy
Undergrowth Stadium
20% of 187 decks
-6% synergy
Opulent Palace
19% of 187 decks
-7% synergy