If you do, Ultimate Spider-Man should be enough to take over a game, especially because its basically untargetable
That's not to say Mortify's unplayable, just that there are cheaper ways to accomplish what this is doing, despite its flexibility
Life gain was the obvious flavorful choice as gaining life from eating food is a trope woven through all kinds of games
I could see the card being good in a Standard deck looking to reanimate Atraxa
When you look to slot your own cards into this, I'd start with Dawn-Blessed Pennant, Eclipsed Realms, or Boldwyr Aggressor
Commander Masters is the first Masters set created specifically for Commander, featuring iconic reprints alongside cards that were previously exclusive to Commander preconstructed decks