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If you want to rent your cards and don't want to spend any effort on them, you can use SPLEX for it.
It is a bot that is super easy to use with a super cool web frontend.
The renting bot is "free" to use, you only pay a share of your rental income. Lowest Tier 10%.
It is absolutely worth if you want to get the maximum out of your rental account with the less effort spend possible.
How to use?
go on Splex.gg.
Sign up,
put your data in and enable the bot. That's it.
Experience:
My experience is the bot tries to get the maximum out of every season and adjust prices to a good market price.
Check it out if you want!