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So because I don't really do the whole online battling thing anymore I was messing with the Battle Tree Singles to give me some end game content to do and threw together a quick team (without access to UBs).
I got to a streak of 49 and lost to Lead Cofagrigus (Hex/Calm...
We swapped pretty frequently and I don't really recall the names. Just shop around to compare prices and make sure they give you some freedom on accessing the server through FTP and stuff.