Questioner
Is someone limited to how many Nahel bonds they can form, or could someone go play Pokéspren and catch them all, getting access to all Surges?
Brandon Sanderson
There are limits to what a soul can handle. These limits are soft caps, not hard caps. Pokéspren is theoretically possible, but there would be hoops, not just the normal "I want to bond two spren" hoop, which is already a pretty big one.