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So there won't be any Survival cooldown when the new season starts, so every card starts with a fresh bill of health. I assume that is what you are asking anyway.

With the short cooldowns for my max legends and GFE, I can get 2 or 3 rounds of survival before cards are too weak!

Oh sorry I was talking about your rating. Does it reset every season and you have to climb all the way back up?

It resets just like all the other ranked formats... two leagues down.