Apollo's main draw nowadays is without a doubt his sub skill. An unrestricted 15% increase to any Red card is nothing to sneer at- it is 20% lower than the specialized damage Stab sub for Mammon (that being Earl Walrus) but has no straight+ restriction and will convey a comparable boost. The conditional only being "equipped to fire-element" is incredibly flexible towards anything else.<br>This offers a boost that is only only 5% short of specialized increases for the harder-to-sub cards (e.g. defense/enhance/healing cards; this includes such standouts as Gambler!). While the icon would not match in those cases, most of the cards you would attach Apollo to there generally don't take advantage of stats as much as an actual attack card anyway.<br><br>
Ultimately, Apollo is a great sub to fill in anywhere you could need him in Red, for those who don't have endless fortunes to pull three of the perfect subs.