He visto algunas dudas en referencia a Snow Graves en el foro de FFG
Si mi oponente juega unas Snow Graves en nuestra pila de descartes, eso previene que el Ojo estigio regrese a la baraja. Ya que después de que el Ojo estigio abandone el juego va a la pila de descartes y entonces se activa el efecto pasivo de barajarse en la baraja
"Ojo estigio y Snow Graves": mostrar Stygian Eye, It Seduces with Promises of Power
Type: Support Faction: Hastur
Cost: 2
Game Text:
Attachment. Relic.
Attach to a non-Ancient One character. Take control of attached character.
After Stygian Eye leaves play, shuffle it into its owner's deck.
Forced Response: After attached character is readied, it goes insane.
Set: IT
Number: 96

Snow Graves
Type: Support Faction: Shub-Niggurath
Cost: 0
Game Text:
Attachment
Attach to a player's discard pile.
Cards cannot be moved out of attached discard pile for any reason.
Set: AtMoM
Number: 15
Illustrator: Kendree McLean

La pregunta, es que sucede con Pay Tribute. Pay Tribute no pasa por la pila de descartes, sino que va directamente al fondo de la baraja. Por lo tanto aunque tengamos un Snow Graves en la pila de descartes, el Pay Tribute va al fondo de la baraja.
Pay Tribute
Type: Event Faction: Syndicate
Cost: 0
Game Text:
Play during your operations phase.
Action: Exhaust a non-Ancient One character, then put this card on the bottom of your deck.
Flavor Text: "Orders come down and the money goes back up, we don't ask questions."
Special Attribute: Steadfast - Syndicate x1
Set: DotU
Number: 34
Illustrator: Douglas Sirois

Y continuando la temática. ¿Como interactúan Snow Graves y Isaac Milles?
Según respuesta de Damon, el efecto de Isaac Milles es un efecto de reemplazamiento, cambia el lugar de destino de la pila de descartes al fondo de la baraja.
Type: Character Faction: Syndicate
Cost: 2 Skill: 3 Icons: (A)(I)
Game Text:
Independent.
When a character card would be put into a discard pile, put it on the bottom of its owner's deck instead.
Flavor Text: "What's your trouble sir?"
Set: DotU
Number: 9
Illustrator: Rafal Hrynkiewicz

Por otra parte, una carta que abandone el juego por un Emparedamiento tampoco se ve afectada por el Snow Graves. La carta afectada por el emparedamiento no va a la pila de descartes.
Type: Event Faction: Syndicate
Cost: 0
Game Text:
Tactic.
Action: Drain a domain you control with the most resources to choose a support card or a non-Ancient One character an opponent controls. That card's owner attaches it to a domain of his choice as a resource.
Flavor Text: "Nobody's ever gonna finds youse now."
Special Attribute: Steadfast - Syndicate x2
Set: DotU
Number: 30
Illustrator: Adam Schumpert
