I wonder what league you are playing now. If still in the Bronze League, why not try a Level 1 Mylor Crowling. It is just $12.69. But if you are already playing the Silver League, try a level 2 Quix the Devious, you will just pay around $54.00 to have this level 2 Summoner.
RE: What is the best card to buy in Splinterlands under 50 bucks?