buy full set of pokemon cards Pokémon Card Game MEGA 30th CELEBRATION Card Starters Pokémon, Chikorita - Cyndaquil 0.24 kilograms Pokemon Trading Card Game: Pitch

Its good in any deck that has to do with counters, usually +1/+1 counters, poison counters, or loyalty counters on planeswalkers

You could drop this first turn and then punch away with 2 or so free Dragons that turn

The box states "noncreature spells" and "protection fields," which very much reads like a control deck that could even feature some alternative win conditions other than hitting opponents down to zero life

Im looking at you, ST10 Trafalgar Law

Companion originally let you cast a single creature from your sideboard if you fit a specific condition, but its immense popularity across every format in the game led to decks needing a Companion to participate