THIS IS THE DREAM

I've been contemplating what is the best power to have during an apocalypse and from reading hundreds of webtoons in this genre, I've considered teleportation, necromancy, gacha power, regeneration, cooking, alchemist, etc. but this... this huge, unlimited, and portable warehouse is the best!!! You have unlimited food, safe and humongous space with various survival goods and items, it's portable, nobody can go inside without permission, all items respawns inside, and as if it's defense power isn't enough, IT HAS OFFENSE ATTACKS AS WELL?!!

you can survive forever as long as you work enough to get a lot of mana stones