These sets don't stay in stock long, so getting them at retail is always a win
While the two first modes speak for themselves and would already constitute a strong magic card, the last mode is more format dependent and as it stands, it is a very effective ability in the current Modern metagame
(Choose any number of permanents and/or players, then give each another counter of each kind already there.) The set of permanents affected by Mutational Advantage is determined at the time Mutational Advantage resolves
The first booster set that allows players to acquire shiny Mega Evolution Pokemon cards, Mega Shine's arrival was headlined by EX versions of Mega Charizard X and Mega Gengar, but it also includes a bunch of less powerful shiny Pokemon, including Ponyta, Zorua, Pineco, and Dragonair
These are the bread and butter of most decks, usually comprising at least half of your cards
Ability: Ability Counterattack If this Pokmon is your Active Pokmon and is damaged by an opponents attack (even if this Pokmon is Knocked Out) put 4 damage counters on the Attacking Pokmon