Pack Tactics: The Adaptaraptor has advantage on attack rolls against a creature if at least one of the Adaptaraptor's allies is within 5 feet of the creature and the ally isn't incapacitated.

Pounce. If The Adaptaraptor moves at least 20 feet straight toward a creature and then hits it with a claw attack on the same turn, that target must succeed on a DC 13 Strength saving throw or be knocked prone. If the target is prone, the Adaptaraptor can make one bite attack against it as a bonus action.

Damage Adaptation: If The Adaptaraptor takes the same damage type from any source  twice it gains resistance to that damage type.  If it takes the same damage 4 times, it gains Immunity to that damage type. If it takes the same damage 6 or more times, it heals on that damage type. The Adaptaraptor cannot gain resistances to psychic damage. These resistances last for 24 hours before fading.

Martial Adaptation: If The Adaptaraptor witnesses the same Martial Ability more then once it can copy it. The ability can be from any martial class such as; Monk, Fighter, Barbarian or Rogue. Some examples of the included abilities are; Action surge, Uncanny Dodge, Reckless Attack and Deflect Missiles. Once learned, that specific Adaptaraptor can permanently preform that ability.

Weapon Adaptation: If The Adaptaraptor watches a target use their melee weapon for more then 2 rounds it can copy their form. The Adaptaraptor can use an improvised version of that weapon with the same proficiency as you do. it deals (1d8+ 3 and the proficiency bonus of the target it learned it from). whilst holding a improvised weapon it can't make bite attacks.  Once learned, that specific Adaptaraptor can permanently wield that weapon. 

Arcane Adaptation: If The Adaptaraptor witnesses the same cantrip more then once it can copy it. The cantrip can be from any spellcasting class such as; Wizard, Warlock, Cleric, Bard or Sorcerer. The Adaptaraptor cannot copy cantrips that require a material component. Once learned, that specific Adaptaraptor can permanently preform that cantrip.

Language Adaptation: If The Adaptaraptor listens to a spoken language for 10 minutes it can choppily mimic that language, if it listens for 2 hours or more it can perfectly mimic that language. The Adaptaraptor can only mimic words it has heard before. Once learned, that specific Adaptaraptor can permanently Mimic that language.

Saving Adaptation: If The Adaptaraptor has to make the same saving throw twice, it gains proficiency in that saving throw, if it makes in 4 time or more it gains expertise in that saving throw. These proficiencies last for 24 hours before fading.

Condition Adaptation: If The Adaptaraptor is effected by the same status condition twice or more it gains resistance to that condition. These resistances last for 24 hours before fading.

Multiattack: The Adaptaraptor takes two claw attacks and one bite or improvised weapon attack.

Claw: Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) slashing damage. 

Bite: Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 7 (2d6 + 3) piercing damage. 

Improvised Weapon: Melee Weapon Attack: +3 to hit, reach 5-10 ft. (depending on the copied weapon), one target. Hit: 7 (1d8 + 3 and the proficiency bonus of the target it learned it from) Bludgeoning damage.

Opportunity attack: The Adaptaraptor can make one bite or improvised weapon attack on a target that leaves its melee range.