Instead of destroying creatures that damaged you, you can tap them by shaking the snow globe in which they are trapped
These cards can be differentiated from other 2000 Pokmon issues by the capital letter "R" (which stands for "Rocket") under the right part of the artwork (on the opposite side of the "Edition 1" stamp)
When this monster is destroyed by spell/trap effect return it to your hand
So whatever it says, add 8% and there you go
Mirko, Obsessive Theorist seems quite strong to me, and if you do nothing but dismantle this deck for pieces, youll at least walk away with a handful of top-tier reanimator spells
This adds to the board in a big way up front, does it even more with Chapter II, and then takes advantage of everything it added to the board