Am I the only one who thinks that this thing is d00med?
4 different energy for 80 is just inconveninet and still expensive... Garchomp at least got its power to add damage on top of the 70 in *most* scenarios, but Ho-oh will barely do any more damage at a more difficult case of 4 different energies -_- The weakness is pretty horrible, being a x2 instead of +20 like Lugia. Water is usually not bad, but the fact that Infernape is also weak to water, and is something everyone wants some counter against, makes it bad. For all I know, some people may flip to water deck just to beat the crap out of Infernape, and accidentally Ho-oh as well.
Phoenix Turn is its last resort... while 4 (different) energy cards for 80 damage with no effect is rather slow, at least your investment may last longer than it seems with a coin flip. It's also great if you are forced into a corner where you just "have" to send something out as scapegoat to take a brutal hit (like Infernape), or if the opponent's only attack is discard energy... do they really want to discard energy for an attack against something that may be there again with just a coin flip? Heh...
I usually dislike rating cards with a number because there's always hidden killer combos that may suddenly deem a card worthy (or made famous by some winners in a tourney). Also, I have no idea about Pokemon TCG except basic TCG knowledge that is shared between all TCG, so I know nothing XD; But seems like it's the rules... so...
6/10 4 different energy for 80 damage without any effect is just too slow for me... and I hate gambling all my investments on a coin.