Check the catalog and search "Infernity", you will see Infernity Archer and Infernity General. Which means they are likely to be Kalin's level up rewards. The bad thing is you don't see Infernity Barrier in the catalog
They cited barrier in the official site (example of combos):
"Add a powerful Trap Card such as "Infernity Break" or "Infernity Barrier" to your hand and Set it so that you're ready to face whatever is thrown at you!"
Anonymous
