As said earlier, I caught them with great balls, however found letter did this, happened in my HGSS challenge thread
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-WENT TO CHERRYGROVE
-NOTICED A CAVE AND WENT IN
-FOUND A LVL 453890 ZEKROM,RESHIRAM,ZUNTAR(GREEN COBRA OVER-RULER OF R/Z) TRIO BATTLE. YEAH 3!!
-BATTLED BUG CATCHER CALLUM(ALL LEVEL 999 1.ARCEUS 2.ZORUARK 3.ZEKROM 4.RESHIRAM 5.ZUNTAR 6.SLASHTHON(UNDISCOVERED) 7.SHOCKANA (UNDISCOVERED)8.MISSINGNO.!
-FOUND 3 MASTERBALLS!!
-FOUND 3 LUBIA WITH NUMBERS ON ITS CHEST
-CAUGHT THEM IN ORDER 2,1,3
-CAME FROZE
-FOUND LETTER APPEARED AND COMLETED MY GAME!!
-D.S RAN OUT AND LOST EVERYTHING I JUST DID
Lol, he really spammed, but he caught 3 lugia, or lubia with master balls