My favorites are probably the Ghost/Phantom 1st edition misprint and Blue Background XY Evolutions misprint: As for other cards (including non-Base Set Pikachus), here is a full list of all the misprints I own
Inspired by Kazuki Takahashi's shonen manga series of the same name, which ran from 1996-2004, fans of the manga and, later, the anime, were overjoyed to have an opportunity to try their hand at a game inspired by Yugi Mutou's exciting game
Once this card has been discarded, you could potentially use it for synchro summoning: its a level 3, which is a great level for all sorts of summons, and its kept safe in your graveyard for you to summon whenever you like.
See rule 602, "Activating Activated Abilities." Therefore, once you put the Activated Ability on the stack, it stays there unless it is countered or something specifically removes the ability from the stack
Lets first get our card prepared for grading by protecting them properly