Batomon Showdown Rattleghast

Rattleghast knocks out its adjacent allies at the start of the battle and gains Poison for each ally lost that way.

Rattleghast is listed as Tier 1, Cost 15, Type ghost and toxic.

Knocking out adjacent allies at battle start

Knockout is defined in the game data as: a knocked out monster cannot trigger, and its abilities are disabled.

The Poison gain is written as for this battle, and the amount rises with level: +4, +8, +12 and +24. Both forms use the same wording.

Levels and Normal versus Shiny

The listed Poison and the cooldown stay the same at every level. What changes is the Poison gained for each knocked-out ally, and Shiny uses a shorter cooldown.

Rattleghast level comparison
Cooldown is measured in seconds. The gain column is Poison received for each ally knocked out, not the monster's own listed Poison.
LevelPoisonPoison gained per knocked-out allyCooldown (Normal)Cooldown (Shiny)
11+46s5s
21+86s5s
31+126s5s
41+246s5s

Practical limits

Count the knockouts, not the monsters on the team, when reading the gain.

Sources

Level values, ability wording and trigger labels are read from the game's own data files for a fixed build.