It's only and is an Instant
Fusion, Synchro, Xyz, Link Monsters and even face-up Pendulum Monsters in the Extra Deck are all able to be Special Summon to the Main Monster Zone this way, meaning the more Link Monsters you have pointing at Main Monster Zones, the more monsters you can Special Summon from your Extra Deck
The Pokmon Company never publishes official pull rate figures, because if it did then some of the hopelessly cardboard-enamoured masses would move on
Looking at things in general terms, however, I can say that a player who got donked (losing on the first turn of the game) will have much less fun than someone who plays an intense game and loses
Other notable censorship cases include: Gengar from Gym Heroes featured cemetery crosses in the background, which were removed for the English release
You can only use each effect of "Changshi the Spiridao" once per turn