Question on killing the biggest beasty in pathfinder

[ErisAcolyte-Chaos jester]

Can you kill a tarrasque using a bag of holding+portable hole 'Bomb' by completing the vortex equation inside the tarrasque. And would you survive it.

Or would you die when you turned the universal power of the vortex bomb on the tarrasque and basically make it implode.

[mageduelist]

If I understand the question correctly, the idea is you get swallowed whole and then combine the two items? Clever, but wouldn't quite work. Let's say a high level warrior-type gets swallowed whole by the Tarrasque with a bag of holding in one hand, and a portable hole in the other. Once in the gullet, they take some bludgeoning damage and acid damage, then on their turn they combine the two items. If the bag of holding is placed in the portable hole, it's pretty clear they'd simply lose both items. If the Portable Hole is placed in the Bag, then a gate to the Astral plane opens, drawing in both items and all other creatures within 10 feet. In this second way of combining the two items, the warrior-type would get drawn in through the gate no question. Depending on how this 10-foot rift in space to the Astral plane is interpreted, a few different things might happen to the Tarrasque:

The Tarrasque doesn't fit through the gate, since as a Colossal creature it's too big to completely fit in a 10-foot radius. Unlikely, but could make sense.

The Tarrasque goes through the gate completely, since at least part of it is within the 10-foot radius, and it gets pulled in. In this interpretation, anything within the 10-foot radius is just pulled into the Astral Plane.

The Tarrasque is torn into pieces as part of it is ripped through the gate, and part of it is not. In this interpretation, the Tarrasque will regenerate any lost parts of its body, though whether it regenerates on the Astral plane or not would also be a judgement call.

[ErisAcolyte-Chaos jester]

Looking at the regeneration rules for the tarrasque, it states 'Regeneration (Ex) No form of attack can suppress the tarrasque's regeneration—it regenerates even if disintegrated or slain by a death effect. If the tarrasque fails a save against an effect that would kill it instantly, it rises from death 3 rounds later with 1 hit point if no further damage is inflicted upon its remains. It can be banished or otherwise transported as a means to save a region, but the method to truly kill it has yet to be discovered.' If no further damage is inflicted on its remains. If the tarrasque gets imploded, the question is more when exactly is it dead.

Because you basically hit the tarrasque with the universe. It probably died when it's bones collapsed its heart and brain in a fantastic display. After that, the remains take even more damage as its bones break further and it ends up being reduced to an astral rift sized heap of broken bones and tissues. Also, who ever said I needed to get swallowed to pull this off. I could go through the nasal passage and trigger the set up in his lungs. A more acid free environment, though I would need to climb.

[ErisAcolyte-Chaos jester]

And it's sucked in, the problem is I think they intend that the tarrasque is sucked in cartoon fashion. That is why I'm trying to work out if doing this inside of the creature would be more effective, since it cannot simply be sucked in and be fine after. It ends up being turned inside out as it goes through the portal, soft fleshy innards first.

[ErisAcolyte-Chaos jester]

And i was going to try it with a summoner(of the brood master)archetype. Lots of minions climbing, with a lot of portable holes and bags of holding. In normal backpacks, with very simple instructions. If one succeeds, then they all succeed. And I will be giving them a treat when they get back.

[Goth Guru]

This is a one shot attack. Basically what is the fort save for a monster if part of it's neck, brain, or one lung is cookie cuttered out. It's a death effect. What you want to do is coax an orb of oblivion into a portable hole. You release that inside the tarrasque and you have your implosion. I suggest you equip you minion with a helm of teleportation for when the orb decides to go after them. Everything that goes into an orb of oblivion is beyond the BLACK DOOR and gone forever.