Cass, Hand of Vengeance + Griffin Guide + Phyrexian Altar

Cass, Hand of Vengeance
Griffin Guide
Phyrexian Altar

Requires
Cass, Hand of Vengeance must be on the battlefield. Griffin Guide must be on the battlefield (attached to any other creature you control). Phyrexian Altar must be on the battlefield.
Steps
  1. Activate Phyrexian Altar by sacrificing the creature with Griffin Guide attached, adding one mana of any color.
  2. When the creature dies, Cass and Griffin Guide trigger.
  3. Resolve the Griffin Guide trigger, creating a 2/2 Griffin creature token.
  4. Resolve the Cass trigger, returning Griffin Guide from your graveyard to the battlefield attached to the Griffin token.
  5. Repeat.
Results
Infinite LTB. Infinite ETB. Infinite colored mana. Infinite sacrifice triggers. Infinite death triggers.

Cass, Hand of Vengeance
9.27% of 151 decks 14 decks
High Synergy Cards
Valor of the Worthy
100% of 14 decks +100% synergy
Cartouche of Solidarity
100% of 14 decks +99% synergy
Goblin Bombardment
100% of 14 decks +94% synergy
Murder Investigation
93% of 14 decks +92% synergy
Nurturing Presence
93% of 14 decks +92% synergy
Squire's Devotion
86% of 14 decks +85% synergy
Kellan, the Fae-Blooded
93% of 14 decks +81% synergy
Heliod's Pilgrim
79% of 14 decks +77% synergy
Altar of Dementia
79% of 14 decks +77% synergy
Brotherhood Outcast
78% of 9 decks +77% synergy
Top Cards
Sram, Senior Edificer
93% of 14 decks +72% synergy
Skullclamp
86% of 14 decks +71% synergy
Codsworth, Handy Helper
82% of 11 decks +70% synergy
Sticky Fingers
79% of 14 decks +75% synergy
Swords to Plowshares
79% of 14 decks +10% synergy
Etali's Favor
75% of 12 decks +71% synergy
Ajani's Chosen
71% of 14 decks +70% synergy
Rune of Speed
71% of 14 decks +70% synergy
Kor Spiritdancer
71% of 14 decks +70% synergy
Gift of Immortality
71% of 14 decks +69% synergy
Creatures
Archon of Sun's Grace
64% of 14 decks +63% synergy
Mesa Enchantress
57% of 14 decks +56% synergy
Moon-Blessed Cleric
50% of 14 decks +49% synergy
Starfield Mystic
50% of 14 decks +49% synergy
Danitha Capashen, Paragon
50% of 14 decks +36% synergy
Armory Paladin
44% of 9 decks +41% synergy
Forgeborn Oreads
36% of 14 decks +36% synergy
Light-Paws, Emperor's Voice
36% of 14 decks +35% synergy
Transcendent Envoy
36% of 14 decks +35% synergy
Stoneforge Mystic
36% of 14 decks +24% synergy
Mister Gutsy
33% of 9 decks +32% synergy
Koll, the Forgemaster
29% of 14 decks +21% synergy
Esper Sentinel
29% of 14 decks +0% synergy
Hero of Iroas
21% of 14 decks +21% synergy
Impulsive Pilferer
21% of 14 decks +20% synergy
Grand Abolisher
21% of 14 decks +11% synergy
Dockside Extortionist
21% of 14 decks +9% synergy
Imperial Recruiter
21% of 14 decks +9% synergy
Instants
Enlightened Tutor
64% of 14 decks +46% synergy
Generous Gift
64% of 14 decks +24% synergy
Chaos Warp
50% of 14 decks +16% synergy
Path to Exile
50% of 14 decks -6% synergy
Boros Charm
36% of 14 decks -19% synergy
Reprieve
29% of 14 decks +20% synergy
Inventory Management
27% of 11 decks +17% synergy
Silence
21% of 14 decks +15% synergy
Stroke of Midnight
21% of 14 decks +2% synergy
Wear // Tear
21% of 14 decks -4% synergy
Sorceries
Idyllic Tutor
71% of 14 decks +68% synergy
Open the Armory
64% of 14 decks +47% synergy
Blasphemous Act
36% of 14 decks +2% synergy
Farewell
29% of 14 decks +17% synergy
Austere Command
21% of 14 decks +5% synergy
Utility Artifacts
Ashnod's Altar
71% of 14 decks +67% synergy
Swiftfoot Boots
64% of 14 decks +19% synergy
Blasting Station
57% of 14 decks +56% synergy
Spawning Pit
50% of 14 decks +50% synergy
Mask of Immolation
50% of 14 decks +49% synergy
Lightning Greaves
50% of 14 decks +22% synergy
Mortarpod
29% of 14 decks +28% synergy
Altar of the Brood
21% of 14 decks +21% synergy
Enchantments
Mantle of the Ancients
71% of 14 decks +65% synergy
Rune of Sustenance
64% of 14 decks +63% synergy
Darksteel Mutation
64% of 14 decks +59% synergy
Impact Tremors
64% of 14 decks +52% synergy
Betrothed of Fire
57% of 14 decks +57% synergy
Galvanic Arc
57% of 14 decks +57% synergy
Sage's Reverie
57% of 14 decks +56% synergy
Angelic Gift
57% of 14 decks +55% synergy
Squee's Embrace
50% of 14 decks +49% synergy
Dragon Mantle
50% of 14 decks +49% synergy
Unquestioned Authority
50% of 14 decks +46% synergy
Frenzied Fugue
43% of 14 decks +43% synergy
Fanatical Devotion
43% of 14 decks +42% synergy
Grim Reaper's Sprint
36% of 11 decks +33% synergy
Gift of Wrath
36% of 14 decks +35% synergy
Chosen by Heliod
36% of 14 decks +35% synergy
Shielded by Faith
36% of 14 decks +35% synergy
Ethereal Armor
36% of 14 decks +34% synergy
Soul-Strike Technique
29% of 14 decks +29% synergy
Knightly Valor
29% of 14 decks +28% synergy
All That Glitters
29% of 14 decks +19% synergy
Sigarda's Aid
29% of 14 decks +14% synergy
Emblem of the Warmind
21% of 14 decks +21% synergy
Utility Lands
Hall of Heliod's Generosity
50% of 14 decks +47% synergy
Axgard Armory
43% of 14 decks +30% synergy
Urza's Saga
29% of 14 decks +18% synergy
Reliquary Tower
29% of 14 decks +11% synergy
Mana Artifacts
Talisman of Conviction
93% of 14 decks +40% synergy
Sol Ring
93% of 14 decks +6% synergy
Arcane Signet
86% of 14 decks +6% synergy
Boros Signet
64% of 14 decks +4% synergy
Mind Stone
36% of 14 decks +4% synergy
Jeweled Lotus
21% of 14 decks +15% synergy
Mana Crypt
21% of 14 decks +13% synergy
Thought Vessel
21% of 14 decks +7% synergy
Fellwar Stone
21% of 14 decks -5% synergy
Lands
Command Tower
93% of 14 decks +6% synergy
Sacred Foundry
79% of 14 decks +34% synergy
Sundown Pass
64% of 14 decks +29% synergy
Spectator Seating
64% of 14 decks +21% synergy
Clifftop Retreat
64% of 14 decks +8% synergy
Battlefield Forge
64% of 14 decks +7% synergy
Rugged Prairie
57% of 14 decks +23% synergy
Arid Mesa
50% of 14 decks +20% synergy
Furycalm Snarl
50% of 14 decks +9% synergy
Exotic Orchard
43% of 14 decks +15% synergy
Needleverge Pathway
36% of 14 decks +6% synergy
Plateau
29% of 14 decks +16% synergy
Myriad Landscape
29% of 14 decks +1% synergy
Temple of Triumph
29% of 14 decks -13% synergy
Boros Garrison
29% of 14 decks -15% synergy
Elegant Parlor
27% of 11 decks +5% synergy
Sunbaked Canyon
21% of 14 decks +6% synergy