Im most inclined to suggest a Voltron playstyle for Kefka, since both halves benefit from combat buffs, but honestly, you can build any deck around him
Pokmon Card Size in CM Many players also want the Pokmon card size in cm
For Steel players, replacing the simple draw of Fortisphere is more complicated
Just as with holo cards, reverse-holo card are usually harder to find and more sought after than standard cards (but not as sought after as holo cards)
Pokemon BREAK: Introduced later in the XY era, Pokemon BREAK cards allowed for a different type of evolution, providing additional abilities and stats boosts while retaining the attacks and abilities of the previous evolution stage
Red and black also offer you ways to draw cards, be it via impulsive draw or with blacks card draw spells that cost life to use