Thoon Thrall is a template from the Monster Manual V (MM5) that bestows the following supernatural ability:

Overdrive Healing (Su)

This ability works like fast healing 5, but a thrall can gain hit points beyond its full normal hit points as temporary hit points. A thrall’s skin begins to blister and swell when this happens, and the thrall grows visibly larger. Once its temporary hit points equal or exceed its full normal hit points, a Thoon thrall must make a save every round or explode (see below).

Right below this ability, there is another one (which it references with "see below"):

Immolate (Su)

When a Thoon thrall is fully healed and has temporary hit points equal to or greater than its full normal hit points, it might explode, its body unable to contain the energy within. At the end of its turn, if a Thoon thrall’s temporary hit points equal or exceed its full normal hit points, it must succeed on a DC 11 Fortitude save. If it fails, it explodes, dealing 3d6 points of fire damage to all creatures within a 10-foot-radius burst, plus an extra 1d6 points of fire damage for each Thoon infiltrator and additional Thoon thrall within 30 feet (Reflex DC 11 half). The explosion kills the Thoon thrall.

My question here is: if I use Ability Rip or a similar effect to steal Overdrive Healing, but not Immolate, from a Thoon Thrall, what happens when my temporary HP reaches my full normal hit points? Do I have to make a saving throw each round? What happens if I fail this saving throw?


1 Answer 1


If using ability rip, figure out how to explode first and then get nigh-infinite hp

If the DM says, "Since your PC now has the overdrive healing ability but can't explode, I guess your PC never will. Enjoy unlimited hp," then you can skip the rest of this answer. However, the 7th-level Sor/Wiz spell ability rip [trans] (Serpent Kingdoms 155), in part, says, that this "spell fails if used to transfer an ability to a creature that lacks the proper body parts, size, or other criterion for its use…."

With that in mind, I'd think it fair were a DM to rule that the criterion for benefiting from the thoon thrall's supernatural ability overdrive healing (Monster Manual V 111) is that a creature must be able explode. (This assumes that, absent other abilities to the contrary (see below), the saving throw DC to avoid exploding is the normal "10 + 1/2 the creature's HD + the creature's ability modifier (usually Charisma)" (Monster Manual 315). If the DM makes a different ruling, then you're on your own.)

It should come as no surprise that in Dungeons & Dragons 3.5 there are many creatures that explode. To dispense with the obvious, and because the thoon thrall's right there, the path of least resistance is first employing the ability rip spell to acquire the thoon thrall's supernatural ability immolate (ibid.) and then employing the ability rip spell again to acquire the overdrive healing ability. I assume, though, that the issue is that the explosion from the immolate ability kills the creature, and that's undesirable. So what's needed is a way to explode and not die.

I won't leave you hanging. From the same book as the thoon thrall there are at least two possibly safe options that can be gained with the ability rip spell:

  • The ember guard's supernatural ability death throes says, "When killed, an ember guard explodes in a 60-foot-radius burst that deals 3d6 points of bludgeoning damage and 3d6 points of fire damage to everything in the area (Reflex DC 24 half). The save DC is Constitution-based" (MM5 52). Since the explosion triggers when the ember guard dies, it's not—and literally can't be—the explosion that kills the ember guard. Nonetheless, the specifics of the overdrive healing ability will (or should—we are, after all, in ask the DM territory) cause a creature with both abilities to explode yet suffer little or no harm for doing so. However, the creature will have undeniably still exploded, so To what degree does this explosion impair a still-alive creature with the death throes ability? is a question for the DM. On the other hand, the death throes ability is a HD 13 outsider's supernatural ability, so there's gotta be a way to get a hold of it if ability rip spells are already being tossed around.
  • The bonespur's supernatural ability boneshard blast says, "Once per day, as a free action immediately following a charge, a bonespur can explode in a shower of bone shards. Creatures within 10 feet of the bonespur take 2d6 points of damage (Reflex DC 12 half). The shards of the bonespur transform into its normal towering shape at the beginning of its next turn" (MM5 156). Not only does this explosion explain how the creature reconstitutes itself after it explodes, the 6th-level Sor/Wiz spell create undead [necro] (Player's Handbook 215) can just create a bonespur from six humanoid corpses. This is by far a better option than the ember guard's death throes ability… if the DM rules that the specifics of exploding via the overdrive healing ability override the once-a-day limitation of the boneshard blast ability. If they don't, then the creature with both could find the overdrive healing ability nonfunctional after the day's first explosion.

I hadn't realized before now just how many monsters in the MM5 explode, but there are a lot, and I'm sure that better explosions from different monsters exist in other tomes. Since the Monster Manual V was already on the table, though, that seemed the best place to start. If allowed, Dumpster-dive into the campaign's permitted sources for more. Still, I would be terribly remiss were I to fail to mention one last option:

  • The monstrous feat Final Strike (Savage Species 34) has as a prerequisite that the creature possess at least one of the air, cold, earth, fire, or water subtypes. (The 3.5 revision eliminated the acid and electricity subtypes. An elemental subtype like this can be gained from the Ritual of Association (SS 148) that costs the subject 36,000 gp and 1,440 XP.) When you, a creature that possesses the feat, are "killed (that is, when your hit points drop to –10 or lower), your body explodes in a final strike—a blast of elemental destruction—according to the table below," and that table for creatures with the earth subtype includes an earthquake effect! That's in addition to "[y]our final strike deal[ing] 1d6 points of damage per Hit Die, up to a maximum of 20d6. Each creature in the area may make a successful Reflex save (DC 10 + 1/2 your Hit Dice + your Con modifier) to halve the damage dealt." Again, like the death throes ability above, this doesn't kill the creature; death kills the creature. Sure, the feat's Special entry says, "A final strike renders your corpse unsuitable for raise dead or resurrection spells. Only true resurrection, miracle, or wish can restore life," but that's a problem for when you're a corpse not now when you're still alive! You do probably look awful, though.

Note: I have yet to play in a campaign wherein my PC kills creatures with the earth subtype, animates them as undead that possess the feat Final Strike via my PC's Graveborn Warrior feat from Dragon #312 (38), and sends his earthquake skeletons into battle, but I want to.

  • \$\begingroup\$ Steadfast Determination may fix immolate, if it is worth editting. The DC is relatively low for a 13 level character, even if a wizard. \$\endgroup\$ Commented Aug 30, 2023 at 21:10
  • \$\begingroup\$ @annoyingimp I'd agree, but the Steadfast Determination feat has the Endurance feat as an annoyingly useless prerequisite; one feat to dodge that bullet would've been okay, but two? Further, if a PC's throwing around ability rip spells then I think that the only reason to pick the immolate ability is convenience. Seriously, why trade your own Su ability for a fatal method of exploding when a nonfatal way of exploding is right there? \$\endgroup\$ Commented Aug 31, 2023 at 2:16
  • \$\begingroup\$ @annoyingimp Upon reflection, The overdrive healing ability doesn't say what kind of saving throw the creature must make (Fort, Ref, or Will)—that, too, is part of the immolate ability. The DM may demand that any alternative to the immolate ability provide such information. That'll probably restrict the combination to the OH/I abilities, making Steadfast Determination essential. \$\endgroup\$ Commented Aug 31, 2023 at 2:34
  • \$\begingroup\$ This is an awesome answer, I like the creative approach. As for Steadfast Determination, you can get Endurance with Favor of the Martyr, so you may only need to spend a single feat instead of two. Getting feats from spells is kind of high-op, but so is Ability Rip, so I feel it's not an unreasonable suggestion \$\endgroup\$
    – SonGuhun
    Commented Sep 3, 2023 at 10:48
  • \$\begingroup\$ @SonGuhun One can just buy the Endurance feat, too, by acquiring, for instance, Shadahkar's swift wind (Dragon #324 75) (8,350 gp; 1 lb.) that grants the feat and more, so as to have the sandals either occupy the owner's feet slot or, for 50% more, added to his current footwear. However, a wizard must still take the feat Steadfast Determination, and that means—at the optimization degree that I think we're talking about (i.e. there's still a limit to the number of feats a creature can have)—being unable to take something else. That can be a a pretty big ask, even for nigh-infinite hp. \$\endgroup\$ Commented Sep 3, 2023 at 17:24

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .