I hope you're able to end a world or two with the armageddanura (perhaps with some daemons and demons as seasoning to taste). I'll be back tomorrow with another monster!
Doom! No, not that one. Why does everyone ask that?
This immense frog floats above the ground and points a claw in judgment. Each iris in its eyes is an hourglass with a variable amount of sand-like material remaining in the upper part of the hourglass. Its chest features an enormous hourglass with very little sand-like material in the hourglass’s upper chamber.
Armageddanura CR 22
NE Colossal outsider
Init +2; Senses darkvision 60 ft.; Perception +40
AC 40, touch 20, flat-footed 40 (–2 Dex, +20 insight, +20 natural, –8 size)
hp 449 (31d10+279); regeneration 20 (good spells and weapons)
Fort +19, Ref +15, Will +23
Defensive Abilities doom revisited on you, fortification (75%); DR 20/epic and good; Immune ability damage, ability drain, acid, cold, death effects, electricity, fire, sonic; SR 33 (28 against spells or effects with the good descriptor)
Speed 60 ft., fly 80 ft. (average)
Melee bite +34 (8d8+11/19–20 plus grab), slam +34 (8d10+11/19–20), tongue +29 (6d6+5 plus pull and grab)
Space 30 ft.; Reach 20 ft. (80 ft. with tongue)
Special Attacks constrict (6d6+11), fast swallow, personalized countdown, pull (tongue, 10 fet), swallow whole (plane shift [DC 25] or 4d6 acid damage plus 4d6 cold damage and 4d6 electricity damage and 4d6 fire damage and 4d6 negative energy damage, AC 20, 44 hp), thunder of damnation, trample (8d10+16, DC 36)
Spell-Like Abilities (CL 31st; concentration +39)
At will—foresight, plane shift
3/day—quickened polar midnight[UM] (DC 27), quickened storm of vengeance (DC 27), quickened unholy word (DC 27)
1/day—cursed earth[UM] (DC 27), gate, mass suffocation[APG] (DC 27), tsunami[APG] (DC 27)
Str 32, Dex 6, Con 29, Int 17, Wis 22, Cha 27
Base Atk +31; CMB +50 (+52 bull rush, +54 grapple and sunder); CMD 78 (80 vs. bull rush or sunder, 82 vs. trip)
Feats Awesome Blow, Blinding Critical, Combat Casting, Critical Focus, Critical Mastery, Deafening Critical, Greater Sunder, Improved Bull Rush, Improved Critical (bite, slam), Improved Initiative, Improved Sunder, Power Attack, Quicken Spell-Like Ability (polar midnight, storm of vengeance, unholy word)
Skills Fly +24, Intimidate +42, Knowledge (arcana) +37, Knowledge (history) +37, Knowledge (planes) +37, Knowledge (religion) +37, Perception +40, Spellcraft +34, Use Magic Device +39
Languages Abyssal, Celestial, Common, Infernal; telepathy 200 ft.
Doom Revisited on You (Su) If a creature fails to overcome an armageddanura’s spell resistance, the spell targets the originator of the spell or effect. In the case of a spell or an effect that affects an area, the spell or effect is centered on the originator. Newly affected creatures are allows a saving throw, but the save DC increases by 5.
If a creature fails to penetrate an armageddanura’s fortification with a critical hit or precision damage, the armageddanura takes no damage. Instead, the attack reflects back on the attacking creature, which makes a new attack roll against itself with a +5 bonus on the attack roll. The attack deals precision damage and automatically inflicts a critical hit if the attack is successful.
Personalized Countdown (Su) A creature that sees an armageddanura views a clock that shows the hour and date of its irrevocable death. The creature must attempt a DC 28 Will save. On a failed save the creature becomes frightened for 1 minute, while a successful save reduces this to shaken for 1 minute. This is a mind-affecting gaze effect. The save DC is Intelligence-based.
Swallow Whole (Su) A creature swallowed by an armageddanura that makes its save against the plane shift effect while swallowed whole takes the listed damage. The swallowed creature must attempt the saving throw against the plane shift effect each turn.
Thunder of Damnation (Su) Once per hour, an armageddanura can make a proclamation of doom. All creatures within a 1-mile radius take 4d6 sonic damage (Fortitude DC 33 halves). A creature that failed the first save must succeed on a second DC 33 Fortitude save or become stunned for 1d6 rounds. The save DC is Charisma-based.
When a world is imminently doomed, but its death throes threaten the multiverse, an armageddanura arrives to ensure the world meets its fate without collateral damage. Since the creature leaves no survivors, its existence is almost unknown among mortal creatures. Those who have studied the creature and the path of destruction in its wake believe a group of deity-like beings created it to enact judgment upon worlds they oversaw. The good beings among them built in a hidden failsafe, which allows good-aligned weapons or spells to overcome the considerable defenses at the armageddanura’s disposal.
An armageddanura lays waste to major settlements before moving on to pick off stragglers. If it meets stiff opposition, it spends time to destroy the offending object or to devour a particularly pugnacious foe to either shunt the foe to a random plane or destroy the foe with the planar energies composing it. It usually must dispatch some gathering of “heroes” seeking to prevent the afrogalypse.