Kaasma Khara Phase 3 was against an parasitical Lagos that was within the now dead creature, careening towards Io.
Lagos, the Insidious Parasite
HP: 295
KP : 200
AC: 17
Ability Scores: STR 20, DEX 14, CON 22, INT 19, WIS 18, CHA 20
Saving Throws: Con+10, Wis+8, Cha+7
Condition Immunities : charmed, exhaustion, frightened, paralyzed, petrified, poisoned, banishment
Traits
Parasitical Bond : For every 100 KP Lagos gains through Kaasma Khara’s demise, it gains an additional trait through a Kaasma Parasite.
Kaasma Barrier : Lagos uses KP instead of HP when damage is dealt. KP may be damaged away using Kaasma Draw Checks.
True Damage : This creature has attacks that deal True Damage. This cannot be reduced/nullified through Resistances or Immunities.
Malleable Kaasma : Using a Kaasma Draw, you are able to shift Lagos’s Ability scores around. For every 30 points of Kaasma Draw not applied to the Kaasma Barrier, you can reduce an ability score by 2, and add an ability by 2. An ability Score cannot be lowered/added more than 4 by this method.
Kaasma Parasite Traits
Immunity to Critical Hits/Sneak Attacks
Immune to Thunder Damage
Resistant to all Slashing/Bludgeoning/Piercing (Immune if 2 of them)
Immune to Radiant Damage
Imminent Demise
Fateful Resilience
Execution Turn (25) : If Lagos is under 100 HP, Lagos creates 20d2 Khara Parasites. At the next Execution Turn, these attack with Parasitical Assasination - Dex Save DC 17, dealing 30d4 True Damage, Save for Half, to anyone 5ft away from a Khara Parasite and Lagos. Lagos is unable to take an Execution for 3 more rounds after the conclusion of this turn.
Action Turn (20) : Lagos, The Insidious Parasite moves up to their movement speed, and Multiattacks (2x) with Parasitic Slasher.
Move Turn (15) : Lagos, The Insidious Parasite, moves up to double their movement speed without provoking attacks of opportunity. Each creature they pass through is attacked with Parasitic Slasher.
Magic Turn (10) : Lagos casts one of the following spells, typically in order.
Conjure Turn (5) : Lagos creates a Khara Parasite. Khara Parasites attack on Conjure Turns, unable to attack when they are created. Khara Parasites have 20 HP, and attack with 1 Parastic Slasher.
Actions
Parasitic Slasher, +9 to hit, 3d6+5 Slashing Damage.