I activate my monster's special ability!
The first two abilities that have effects outside of battles
Pickup and Illuminate
The infamous combination where Ash's Pikachu uses Thunder on himself and Swellow in order to defeat Tate and Liza
Thunder Armour
In Pokemon Diamond, Pearl and Platinum you can encounter Drifloon at this date and location
Friday at the Valley Windworks
The game's Pot of Greed
Bill
The first Pokemon games
Pokemon Red and Green
The most common ability used in doubles has received a nerf by having other abilities to be immune to this ability in Gen 8
Intimidate
The Master Ball. The Pokeball that will guarantee the capture of a Pokemon failed to catch this Pokemon
Whiscash
The Bug-Catching Contest is held at this location at these days of the week
The National Park on Tuesdays, Thursdays and Saturdays
The card type for Dragon Pokemon before they had their own card type
Normal
The true Pokemon sequel games
Pokemon Black and White 2
(I'll accept Gold/Silver)
The abilities that make the Pokemon worse.
Truant, Defeatist, Slow Start
Ash straight up cheats in this Gym battle by leaving this Gym Leader's Gym to get a Pokemon from his PC.
Elesa
See the Clefairys dancing
Monday night at Mt. Moon
Terminalmontage
Mega Symphony Mega Audino
The only game(s) that requires 1 HM to reach the Pokemon League.
Pokemon Black/White
With this ability, any Pokemon can be Uber tier
Moody
Meowth questions if they're old when Goh doesn't know what this is.
Phone Booth
Challenge Cynthia in this town and date in BW + BW2
Undella Town during any day in Spring (January, May, September)
These three Pokemon team up to face the god of Time, Space and Creation in a commercial for Cosmic Eclipse.
Igglybuff, Cleffa and Togepi
The one game where you can teach Sucker Punch
Pokemon Platinum
These Legendary Pokemon were revealed to have dream world abilities that were not released. However, they were changed in XY.
Zapdos - Lightning Rod --> Static
Raikou - Volt Absorb --> Inner Focus
Entei - Flash Fire --> Inner Focus
Suicune - Water Absorb --> Inner Focus
Team Rocket imagines Giovanni using the Honey in DP like this
Running in the wilderness wearing nothing but his speedo lathered in honey and having all the bug Pokemon licking him.
The only Gym Leader you can rematch on a Thursday in the Fighting Dojo.
Bugsy
Imakuni's Pokemon
Doduo
These games will force stop an evolution if you do not meet the right conditions
Pokemon Fire Red and Leaf Green