Do tokens trigger leave the graveyard?
The Tomb looks for creature cards leaving the graveyard. Tokens are not cards even if represented by pieces of card board. Tokens cannot trigger the artifact for that reason. They do leave the graveyard by ceasing to exist, since they were there and then they are not, therefore they left.
Does grave betrayal work on tokens?
Does Grave Betrayal work on tokens? No. The tokens will poof out of the grave as soon as State Based Actions are checked. That happens far before the token is supposed to be revived, at the end of turn.
Do tokens trigger nether traitor?
Tokens that leave the battlefield will cease to exist once State Based Effects are checked, but that gives enough time to trigger “put into a graveyard” effects like Nether Traitor. Yes they do.
Do tokens go into graveyard?
A creature token that dies goes to the graveyard, just like any other creature. Once in the graveyard (or any other zone), there is a state-based action that causes the token to cease to exist. If a token dies (such as by Doom Blade” target=”blank”>Doom Blade), it will go to the graveyard.