Unlike Worldy Tutor Survival of the Fittest isnt like Worldly Tutor where you have to put it on top of your deck
The major characters like the Fellowship of the Ring, their closest allies, and the major villains like Sauron all get multiple mechanically unique cards to represent them during different parts of their long journeys
It is an adaptation of the card game of the same name
Heres a story from personal experience: I once tried to crossover a BGS 8 Jordan Fleer Rookie Card (without cracking it out, it went in its existing BGS slab as pictured below) to a PSA 8 min
Since it's a mana cheap instant, you can do this in response to targeted or sweeping removal to get cards, as a sacrifice or it can send something to your graveyard about to get exiled by Swords to Plowshares, or to get value out of a chump blocker about to die anyway
We actually played the card game at my school and it was quite competitive for a year or so and a ton of fun