There is a Level 83+ deck that you can get as a drop from bosses (The death deck gives +23 health) and there is a Level 85+ deck that Transcendent Crafters can craft from a recipe vendor on an snowy island in the Floating Mountains of Azteca. The Level 85+ Death deck gives about +35 or +37 health. I forgot the names of both decks thou so I'm sorry about that part . Well, good luck.
Also, there is a Level 90+ deck (Name: Deck of Immortal Might) that you can get from Sand Squid Tentacle in the Atlantea dungeon (The "secret boss" in the Atlantea Dungeon (Level 70+ dungeon)). That deck gives +50 Health. And there is a Level 95+ deck that you can buy from the deck vendor in Silent Market in Khrysalis and that one gives +45 Health. I hope this helps.
. Well, good luck.