With the power you have, it makes sense if you choose to rent out the monsters you have, I'm sure you're also battling to get rewards and replay them in renting.
If I had more power and monsters, I would definitely do the same.
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I am only renting out the duplicates and I keep the rest for my own use. Currently, I am happy enough with 200k CP for a maximum rank of Gold I for the season and any extra CP I get is for rentals.
Posted Using LeoFinance Beta