User blog comment:ShadowEyepatch/FAN CARD The Emptiness of Lost World!/@comment-31598076-20181214000736/@comment-33052195-20181214005406

It has low crit (2 is not impressive). Sealing off life and gauge gain one time is annoying but impossible to deal with, abyssal door is annoying, but the main problem is that it doesn't really matter if it hits directly since it's just 2 crit, it doesn't have double attack or anything so it's just a discard one. vanity regeneration is pretty good but not insane, Lost Sonata is alright i guess but being once per game really makes it meh. It can also be rested too. So overall, seemingly scary but not really effective. Another big thing is that you don't mention where the lost world monsters are coming from, deck? Hand? field? drop? Plus fueling up with monsters will lead to deck out without a proper way to finish.