Anti-Adblock Shield. The Spambot, while having more than half its maximum HP, is immune to the effects of shield, silence and counterspell spells.

Aura of Spam. The Spambot, while active, emits continuous babbling, repeating the same message over and over again. All creatures that are  within 20 feet of a Spambot and can hear it, are severely distracted and have disadvantage on all attack rolls and ability checks, as well as on constitution saving throws made to maintain concentration on a spell.

Death Throes. If the Spambot dies, each creature within 20 feet of it must make a DC 16 wisdom saving throw. On a failure, the creature is incapacitated until the end of its next turn, doing nothing but trying to clean up the mess the Spambot left behind. On a success, nothing happens.

False Appearance. While the spambot is inactive and does not talk, it is indistinguishable from a normal humanoid.

Innate Spellcasting. The spambot can cast the following spells, requiring no material components:

• at will: magic mouth, message, sending, [spell[skywrite[/spell], thaumaturgy
• 1/day: color spray, hypnotic pattern

Spam Spreader. The spambot can sense any communication done by creatures within 120 feet of it via telepathy or spells that allow telepathic or distant communication. Whenever a creature tries to use such a method to communicate, there is a 50% chance that its message is lost and replaced by a generic spam message created by the spambot.

Multispam. The Spambot casts one of its spells. It then uses its Spam twice.

Spam. The Spambot targets one creature it can see within 20 feet of it. The target must make a DC 16 wisdom saving throw, as the Spambot throws a sheer endless amount of parchment sheets, all with the same message written on them, at the target. On a failure, the target takes 14 (4d6) psychic damage and spends its reaction frantically going through all these sheets, fearing it might have missed or lost something that could be important. On a success, it takes half as much damage without any additional effects.

Slam. Melee weapon attack, +5 to hit, reach 5 ft., one target. Hit: 7 (1d8+2) bludgeoning damage.

Spam Tactics.  If the Spambot can see another Spambot using its Spam action, it can use its reaction to increase the Spam's potency. If it does so, the target of that Spam has disadvantage on its saving throw and the Spam deals an additional 14 (4d6) psychic damage.