What was your easiest legendary capture?

[Sheep]

I remember catching Kyogre on the first Poké Ball once in Sapphire, without weakening it. What was your easiest capture?

 

[Devalue]

For raids, probably some Dynamax Adventure Pokemon. Maybe something like Mesprit? Sees no spread moves on it.

Outside of raids, probably Xerneas? Might have Turn 1 Quick Balled it before.

 

[Explorer of Time]

I caught Groudon on my second Ultra Ball in Ruby, once. Sadly, this was during a Psychic monotype run where I couldn't use it.

 

[miragespot]

Landorus with a Quick Ball in ORAS.

 

[𒈟Lavemu𒐫]

I caught a mewtwo first turn with an ultra ball in ultra moon!

 

[ReKoil]

Outside of using Master Balls...
... I once caught a Palkia on my second Net Ball throw. Not entirely sure what game that was in though.

 

[Palamon]

Think I got a few legends in a Quick ball once. I have more stories for hard tho

 

[PoryKid575]

Probably Xerneas when I replayed X a year or so ago. My memory is a bit hazy, but I'm pretty sure it only took 1 or 2 Ultra Balls to catch.

 

[Harmonie]

IIRC I caught Reshiram immediately on the first try with a Critical Capture. Lol

 

[Sweet Serenity]

Other than the legendaries with a high capture rate for story purposes, such as Reshiram or Zekrom in Gen V or Eternatus in Gen VIII, my easiest legendary capture was, in fact, Regigigas in either Alpha Sapphire or Omega Ruby. I played both titles, but I don't remember which game this specifically happened in. After undergoing all the convoluted steps to encounter Regigigas, I simply threw an Ultra Ball at it and literally caught it on my first attempt. I was in awe!

 

[Diamond 97]

In Black Version I caught Kyurem with an ordinary Poke Ball on my first throw.

 

[Zeostar]

I can't remember specifics, but I've definitely thrown pokeballs at the start a couple of times and have had it succeed. (I think one of them might have been Rayquaza).

 

[Explorer of Time]

As of the latest necro, I have a new easiest capture; catching Xerneas with a Quick Ball on turn 1.