yugioh zombie meta deck build History of the Zombies Deck Breakdown | Guides,

During either player's turn: You can return this card to the hand, then target 1 face-up Spell/Trap card you control: Return it to the hand, then apply this effect, depending on whose turn it is

You and permanents you control gain hexproof until end of turn

(If unsolved, solve at the beginning of your end step.) Solved , Sacrifice this Case: Search your library for a card, put it into your hand, then shuffle

If this isnt enough, you can also spend money on Poke Gold in the Cash Shop to purchase packs directly

Another key idea here is that I already wanted to try adding Hedge Maze or Temple of Mystery to help with selection as I am chaining off Risen Reef draws

A 6/6 naturally survives more combat situations, damage-based sweepers, and removal spells