There are certain cards in Marvel Snap that are better in specific spots than others. Mister Fantastic, for example, is amazing in the middle position since he'll give +2 to both the left and right locations.
Meanwhile, cards like Giganto are literally designed to be used on the left location. But what about the right location? Are any Marvel Snap cards specifically good in that area?
Sentry
First up is technically a loophole since he can't be played in the right location, but the fact that he adds a -8 Void to the right location when played is essentially the same thing. Should be obvious why Sentry is perfect for the right location.
Cosmo
Cosmo is really good for any location, but specifically, players tend to use their big 6-cost cards on the right location more often since they spend the first two turns filling the left and middle locations (once they're revealed) with weaker cards.
And, if a player throws Cosmo in at the perfect time such as Turn 5 or 6, they can completely nullify certain On Reveal cards like ones that discard cards or high-cost cards like Odin.
Giganto
It's specifically because Giganto can't be played in the right location that it's such a good card for it. There are plenty of ways to move cards left or right using cards like Dr. Strange or Iron Fist, and Dr. Strange works great for moving Giganto. Putting Giganto on the left only to move them to the right is a stronger bait and switch than it would be with other cards. Why? Because people, just by reflex, tend to take a card's description at face value and don't immediately assume that Giganto can be 'moved' anywhere other than the left location.
Goose
Goose is the perfect card to use on the right location because players usually don't play their 1, 2, or even 3-cost cards on the right location while it hasn't been revealed. Well, at least, on average they don't. Of course, specific decks or players using Uatu the Watcher might still do so, but they're rarities. So, playing Goose on Turn 4 at the right location basically forces the opponent to combine their weak 1-cost cards with their stronger 4, 5, and 6-cost cards, and usually, this wasn't in their game plan originally such as with Devil Dinosaur decks.
Uatu The Watcher
As simple of a card game as Marvel Snap is, there are a ton of mind games happening at every turn of it. Anyone who has played a well-timed Starlord, Rocket Racoon, Groot, or Gamora can verify just how good it feels to figure out to nail what location an opponent plays a card at. This is basically the reason why Uatu is good in the right location. Uatu is a card that allows the wielder to view the other two locations before they're actually revealed on turns 2 and 3.
The majority of enemy players know Uatu's function, so when they see a Uatu played on the third location, AKA the right location, it tends to make them think that it's a location worth playing cards on early.
Viper
Last up, Viper is perfect for the Right location because it's the location a player can believably put cards they want it to 'look like' they messed up playing. Imagine that someone plays a card on the right location when it's Necroshia and they end up making their card go negative. Then, imagine that player leaves that location alone until Turn 5, it would be common sense to assume that they gave up on winning there right? But then, imagine the player drops Viper on the right and then Green Goblin right after, and all of a sudden all those negative numbers are working against the opponent rather than the player who originally held them.
Marvel Snap is available for mobile devices and PC.