I used a quick ball on it but then got up to like the 8th gym without saving cause I was going so well and was doing it so quickly and didnt realise it was low but my power ran out. Then the second time I threw a couple of dusk balls I think then caught it, O yeah and it was Palkia
Two dusk balls. Giratina on the other hand took 20 dusk balls, 20 ultra balls, 3 net balls (I was getting desperate), 3 luxury balls (even more desperate), and 2 timer balls (these were my last balls besides my master) at low red health.
Palkia took me 2 Great balls at full health I think. I still have my masterball after obtaining all the catchable Legendarys and cloned that master ball twice now
seriously, who really cares. anyways i got it down to one hp and threw a poke ball, not like all the people who think their so cool and throw a ultra ball when its on full health