i use a2 stragetys
number one legendarys that dont flee False Swipe or use a move to get it in red then switch to my gengar or Magnezone which ever and then either put it to sleep or paralyze it.Then throw ultra balls till i catch it
Number 2 fleeing legendarys first i make sure i have a high level pokemon that knows fale swipe. Say Mesprit i battle it use flase swipe it goes to say 1HP and flees next time i use my Crobat and use mean look so it stays. Then i just throw pokeballs till i catch it
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