He could think of several ways to trap it, but most of them required knowledge of spells that he didn’t have. If he knew how to make a simulacrum and open portals, he could simply send in his simulacrum as bait and then open a portal leading to wherever he set the trap up. Hell, simply knowing how to make a simulacrum would make things a million times easier since he could test his ideas without endangering himself. If he knew large terrain alteration spells, he could simply seal it off in its lair and wait for it to suffocate. If he knew the spells to manipulate large amounts of water, he might be able to drown it. And so on, and so on…
He also considered poisoning the thing or putting it to sleep or otherwise using some kind of alchemical concoction that would cripple or kill it… but a
